river – See Animals Wild

January 7, 2024January 7, 2024

Otters not yet safe in Cumbria

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The recovery of otters in the UK continues apace, but threats remain

Otters were once one of the most common predators in the UK. However, being apex predators, they are the first sign of contamination in the system. This is because, while each fish may have a low enough dose to not be impacted, when the otter has eaten many fish they are impacted.

The main threats have been chemical runoff from farms, though sewage is also a problem.

By the 1980s, the British otter was virtually extinct from large parts of the country, only surviving in remote places, far from people and pollution. Oddly, otter hunting with special hounds was not banned until 1981, which will not have helped.

No more! Otters are now found within all counties of the UK. Now, it is true that otters are hard to see – they have always been. Generally they are species which require you to be out at strange times of the day, or just very lucky.

There are places to head where this is not the case, such as the Isle of Mull and similar islands around the UK, where the otters are dependent on the tide, so can be easier to find active in daylight.

On mainland Britain, it seems that Cumbria is an increasingly good place to look, with all suitable habitat now occupied.

Time will tell, but hopefully in the near future, this will be the case all over the UK.

3.4.5 Peleinae, Alcelaphinae, Hippotraginae

Subfamilies 3. Peleinae, 4. Alcelaphinae, 5. Hippotraginae

The subfamily 3. Peleinae (one species)

Grey Rhebok

The grey rhebok or grey rhebuck, locally known as the vaalribbok in Afrikaans, is native to South Africa, Lesotho, and Eswatini (Swaziland). The specific name capreolus is Latin for ‘little goat’. Generally confined to the higher areas of Southern Africa, they typically inhabit grassy, montane habitats – for example, sourveld – usually 1,000 metres (3,300 ft) above sea level, and carry a woolly grey coat to insulate them from the cold. They are not strictly limited to this habitat as they can be found in the coastal belt of the Cape, almost at sea level.

The grey rhebok is listed as “Near Threatened”, with a population of between 10,000-18,000

4. Subfamily Alcelaphinae - Sassabies, Hartebeest, Wildebeest (6 species)

Hirola

The HIrola ( also known as the Hunters hartebeest or hunters antelope) is a critically endangered species. It was named by H.C.V Hunter (a big game hunter and zoologist) in 1888. It is the only member of the genus Beatragus, and it currently has 300-500 individuals living in the wild (there are none in captivity).

It is a widely known fact, that should the Hirola be lost from the wild, it will be the last species in its genus, and therefore the first mammal genus to go extinct in Africa in the modern era. Locals have got behind this species, with 17 conservancies protecting much of the area. There are even efforts to make some of this area devoid of predators, so as to help this species bounce back faster.

Tsessebbe, other names regularly used include Topi Sasseby and Tiang

The Tsessebbe is part of a group of so called species, which are actually subspecies (there are 5 or 6 subspecies recognized

It is closest related to the Bangweulu Tsessebe, Less so, but still very close to the Topi, Korrigum, Coastal Topi and teh Tiang subspecies. Even the Bontebok is very closely related.

Tsessebbes have around 300,000 living wild
Korrigum (Senegalese Hartebeest) in 2004, it was numbered 2650, split between 2 national parks. They situation has not improved
Topi are doing well with over 100,00
Currently, the Tiang still number very high.

Bontebok

Found only in Southern Africa, its range includes South Africa, Lesotho and Namibia

There are 2 subspecies:

Bontebok, found around the western cape -2500-3000 (vulnerable IUCN)
Blesbok, found in the high-veld. Closely related to the Tsessebe has a population of around 120,000 (Least concern IUCN)

The majority of this is in protected reserves, meaning that the current threat is low and this species should keep growing

Hartebeest

The Hartebeest – as many as 70 subspecies, local variants and similar have been suggested, however there is only one currently recognized species.

Overall, the species is listed as least concern with a population of around 360,000. The red hartebeest has a population of 130,000, but at the other end the Swaynes hartebeest in Ethiopia is only thought to number 800 in the wild. The Bulbul hartebeast (light blue) is extinct. The Lelwel Hartebeest(green) is considered endangered and has around 70,000 members. The western or Major hartebeest has around 36,000. What is clear, is that if you are travelling to an area where the local hartebeest is struggling, it would be we worth paying to see them, so as to give a value to them

Blue Wildebeest

Other names include common wildebeest, white-bearded gnu or brindled gnu.

There has been five subspecies recognized:

C.t.taurinus (Burchell, 1823), the blue wildebeest, common wildebeest, or brindled gnu Inhabits the dark brown range
C. t. johnstoni (Sclater, 1896), the Nyassaland wildebeest, inhabit orange (Tanzania, Mozambique Malawi)
C. t. albojubatus (Thomas, 1912), the eastern white-bearded wildebeest, found in the Gold (beside the Yelow)
C. t. mearnsi (Heller, 1913), the western white-bearded wildebeest, its range is shown in yellow
C. t. cooksoni (Blaine, 1914), Cookson’s wildebeest, is restricted to the Luangwa Valley in Zambia. This is the mighter brown

In addition, the distinctive appearance of a western form, ranging from the Kalahari to central Zambia, suggests that subspecies mattosi (Blaine, 1825) may also prove distinct from subspecies taurinus. The western form can be recognised even at a distance by its upright mane, long beard, and minimal brindling.

There are around 1.5 million of this species living in the wild – so they are not endangered. Having said this, given that 1.3 million (almost 90% of them live in the Serengeti ecosystem), were something to happen, we could be in a very different position..

Black Wildebeest

The Black wildebeest is the black wildebeest or white-tailed gnu is one of the two closely related wildebeest species. It was first described in 1780 by Eberhard August Wilhelm von Zimmermann. It came surprisingly close to extinction, having been hunted as a pest and for its meat and hide.

The current population is now thought to be around 18,000, though 7000 of this is in Namibia (outside their natural range) where they are farmed. Their conservation status is least concern

5. Subfamily Hippotraginae

Addax

The waterbuck is a large antelope found widely in sub-Saharan Africa.It was first described by Irish naturalist William Ogilby in 1833.

Its 13 subspecies are grouped under two varieties: the common or ellipsiprymnus waterbuck and the defassa waterbuck. The head-and-body length is typically between 177 and 235cm and the typical height is between 120 and 136cm. In this antelope, males are taller and heavier than females. Males reach roughly 127 cm at the shoulder, while females reach 119cm. Males typically weigh 198–262 kg and females 161–214 kg. Their coat colour varies from brown to grey. The long, spiral horns, present only on males, curve backward, then forward, and are 55–99 cm long. Waterbucks are rather sedentary in nature. As gregarious animals, they may form herds consisting of six to 30 individuals. These groups are either nursery herds with females and their offspring or bachelor herds. Males start showing territorial behaviour from the age of 5 years, but are most dominant from the six to nine. The waterbuck cannot tolerate dehydration in hot weather, and thus inhabits areas close to sources of water. Predominantly a grazer, the waterbuck is mostly found on grassland. In equatorial regions, breeding takes place throughout the year, but births are at their peak in the rainy season. The gestational period lasts 7–8 months, followed by the birth of a single calf.

Waterbucks inhabit scrub and savanna areas along rivers, lakes, and valleys. Due to their requirement for grasslands and water, waterbucks have a sparse ecotone distribution. The IUCN lists the waterbuck as being of least concern. More specifically, the common waterbuck is listed as of least concern. while the defassa waterbuck is near threatened. The population trend for both is downwards, especially that of the defassa, with large populations being eliminated from certain habitats because of poaching and human disturbance.

The common waterbuck is listed as least concern, while the Defassa is listed as near threatened. Only 60% of this subspecies population is in protected areas, so it could get worse, if they are lost.

Sable Antelope

The Nyala is a spiral horned species

found in Southern Africa. The nyala is mainly active in the early morning and the late afternoon. It generally browses during the day if temperatures are 20–30 °C and during the night in the rainy season. The nyala feeds upon foliage, fruits and grasses, and requires sufficient fresh water. It is a very shy animal, and prefers water holes to the river bank. Not territorial, they are very cautious creatures. They live in single-sex or mixed family groups of up to 10 individuals, but old males live alone. They inhabit thickets within dense and dry savanna woodlands. The main predators of the nyala are lion, leopard and African wild dog, while baboons and raptorial birds prey on juveniles. Males and females are sexually mature at 18 and 11–12 months of age respectively, though they are socially immature until five years old. They have one calf after 7 months of gestation. Its population is stable, with the greatest threat coming from habitat loss as humans expand. There are thought to be 36500 and the population is stable.

Giant Sable

Red Lechwe antelope are found in a band across Africa, including areas of Eastern, Central and Western Africa.

There are 3 subspecies:

The western kob, is found in the west
The Ugandan Kob is found in sub-Saharan Africa in South Sudan, Uganda and the Democratic Republic of the Congo.
The white eared Kob is found in Western Ethiopia and South Sudan (this is one of the main animals in the huge migration within sudan)

None are currently threatened with extinction. Their total population is 50,000-60,000

Roan

The Nyala is a spiral horned species

Gemsbok

Red Lechwe antelope are found in a band across Africa, including areas of Eastern, Central and Western Africa.

There are 3 subspecies:

The western kob, is found in the west
The Ugandan Kob is found in sub-Saharan Africa in South Sudan, Uganda and the Democratic Republic of the Congo.
The white eared Kob is found in Western Ethiopia and South Sudan (this is one of the main animals in the huge migration within sudan)

None are currently threatened with extinction. Their total population is 50,000-60,000

Belsa Oryx

The Nyala is a spiral horned species

Schimitar Oryx

Red Lechwe antelope are found in a band across Africa, including areas of Eastern, Central and Western Africa.

There are 3 subspecies:

The western kob, is found in the west
The Ugandan Kob is found in sub-Saharan Africa in South Sudan, Uganda and the Democratic Republic of the Congo.
The white eared Kob is found in Western Ethiopia and South Sudan (this is one of the main animals in the huge migration within sudan)

None are currently threatened with extinction. Their total population is 50,000-60,000

6. Subfamily Aepycerotinae (1 species)

Impala

There are currently around 2 million Impala roaming across Africa. About one quarter of these live in protected areas in Botswana, Kenya, South Africa, Tanzania, Zambia, and Zimbabwe. Around 1000 of the Black faced Impala live in the green area in the west of Africa.

7. Subfamily Antilopinae

Dama Gazelle

The Dama Gazelle is a small antelope, species with a handful of small populations acros central and western north Africa. It lives in the Sahara and the Sahel desert.

In Niger, the Dama Gazelle has become a national symbol.

There are 3 subspecies, however the Mhorr gazell is extinct in the wild (though zoos have a number) , the dama gazelle is only kept in captivity one zoo and is very rare in the wild.

The species is critically endangered with only 100-200 left in the wild. Given that this small population is spread over a number of areas. The number of wild semi wild and captive is around 2900, so it is just the need to save the species in the wild which is the current problem.

1. Tragelaphini – spiral-horned antelope

1. Tragelaphini - spiral-horned antelope

Bushbuck

The Cape bushbuck , also known as imbabala is a common, medium-sized and a widespread species of antelope in sub-Saharan Africa. It is found in a wide range of habitats, such as rain forests, montane forests, forest-savanna mosaic, savanna, bushveld, and woodland. Its stands around 90 cm at the shoulder and weigh from 45 to 80 kg. They are generally solitary, territorial browsers.

Although rarely seen, as it spends most of its time deep in the thick bush, there are around 1 million in Africa

Common Eland

The common eland (southern eland or eland antelope) is a large-sized savannah and plains antelope from East and Southern Africa. An adult male is around 1.6 m tall at the shoulder (females are 20 cm shorter) and can weigh up to 942 kg with a typical range of 500–600 kg. Only the giant eland is (on average bigger). It was described by Peter Simon Pallas in 1766. Population of 136,000, can form herds of 500

Giant Eland

The giant eland, (also known as Lord Derby’s eland and greater eland) is an open-forest and savanna antelope.

It was described in 1847 by John Edward Gray. The giant eland is the largest species of antelope, with a body length ranging from 220–290 cm (87–114 in). There are two subspecies: T. d. derbianus and T. d. gigas.

The giant eland is a herbivore, living in small mixed gender herds consisting of 15–25 members. Giant elands have large home ranges. They can run at up to 70 km/h. They mostly inhabit broad-leafed savannas and woodlands and are listed as vulnerable and have a wild population of 12,000-14,000

Greater Kudu

The greater kudu is a large woodland antelope, you can see its distribution on the map. Despite occupying such widespread territory, they are sparsely populated in most areas due to declining habitat, deforestation, and poaching.

The spiral horns are impressive, and grow at one curl every 3 years – they are fully grown at 7 and a half years with 2 and a half turns. Three subspecies have been agreed (one described has been rejected) :

T. s. strepsiceros – southern parts of the range from southern Kenya to Namibia, Botswana, and South Africa
T. s. chora – northeastern Africa from northern Kenya through Ethiopia to eastern Sudan, Somalia, and Eritrea
T. s. cottoni – Chad and western Sudan

They are listed as near threatened with 118,000 in the wild

Lesser Kudu

The lesser kudu is a medium-sized bushland antelope found in East Africa. It was first scientifically described by English zoologist Edward Blyth (1869).It stands around 90 cm at the shoulder and weigh from 45 to 80 kg. They are generally solitary, territorial browsers.

While currently rated not threatened, its population is decreasing. It currently stands at 100,000, but it is loosing territory to humans

Common Bongo (and mountain Bongo)

The bongo is a large, mostly nocturnal, forest-dwelling antelope, native to sub-Saharan Africa. Bongos are characterised by a striking reddish-brown coat, black and white markings, white-yellow stripes, and long slightly spiralled horns. It is the only member of its family in which both sexes have horns. Bongos have a complex social interaction and are found in African dense forest mosaics. They are the third-largest antelope in the world.

The Common (western or lowland bongo), faces an ongoing population decline, and the IUCN considers it to be Near Threatened.

The mountain bongo (or eastern) of Kenya, has a coat even more vibrant than the common version. The mountain bongo is only found in the wild in a few mountain regions of central Kenya. This bongo is classified by the IUCN as Critically Endangered (where it breeds readily). (this is not on the map above). Only 100 live wild, split between 4 areas of Kenya

Nyala

The Nyala is a spiral horned species

Mountain Nyala

The mountain Nyala (also known as the Balbok) is a large antelope found in high altitude woodlands in just a small part of central Ethiopia. The coat is grey to brown, marked with two to five poorly defined white strips extending from the back to the underside, and a row of six to ten white spots. White markings are present on the face, throat and legs as well. Males have a short dark erect crest, about 10 cm (3.9 in) high, running along the middle of the back. Only males possess horns.

The mountain nyala are shy and elusive towards human beings. They form small temporary herds. Males are not territorial. Primarily a browser. They will grazing occasionally. Males and females are sexually mature at 2 years old.. Gestation lasts for eight to nine months, after which a single calf is born. The lifespan of a mountain nyala is around 15 to 20 years.

Found in mountain woodland -between 3000m and 4000m. Human settlement and large livestock population have forced the animal to occupy heath forests at an altitude of above 3,400 m (11,200 ft). Mountain nyala are endemic to the Ethiopian highlands east of the Rift Valley. As much as half of the population live within 200 square km (77 sq mi) area of Gaysay, in the northern part of the Bale Mountains National Park. The mountain nyala has been classified under the Endangered category of the (IUCN). Their influence on Ethiopian culture is notable, with the mountain nyala being featured on the obverse of Ethiopian ten cents coins.

Situnga Antelope

The sitatunga (or marshbuck)is a swamp-dwelling medium-sized antelope found throughout central Africa (see the map to the right. The sitatunga is mostly confined to swampy and marshy habitats. Here they occur in tall and dense vegetation as well as seasonal swamps, marshy clearings in forests, riparian thickets and mangrove swamps.

The scientific name of the sitatunga is Tragelaphus spekii. The species was first described by the English explorer John Hanning Speke in 1863.

It is listed as least concern with 170,000-200,000, and are found in 25 countries. However 40% live outside reserves, so the situation could get worse fast.

Note: these animals have been dealt with in less detail than others. Should you be interested in finding out if I have written on these animals or what exactly I said, you can find you by searching for it in the box at the bottom of the page.

2. Subfamily Reduncinae: rhebok reedbuck and Waterbuck

2. Reduncinae - Rhebok, Reedbuck, Waterbuck

Boher Reedbuck

The bohor reedbuck is an antelope native to central Africa.

The head-and-body length of this medium-sized antelope is typically between 100–135 cm. Females are smaller. This sturdily built antelope has a yellow to grayish brown coat. Only the males possess horns which measure about 25–35 cm long. There are 5 subspecies:

R. r. bohor Rüppell, 1842: Also known as the Abyssinian bohor reedbuck. It occurs in southwestern, western and central Ethiopia, and Blue Nile (Sudan).
R. r. cottoni (W. Rothschild, 1902): It occurs in the Sudds (Southern Sudan), northeastern Democratic Republic of the Congo, and probably in northern Uganda.
R. r. nigeriensis (Blaine, 1913): This subspecies occurs in Nigeria, northern Cameroon, southern Chad and Central African Republic.
R. r. redunca (Pallas, 1767): Its range extends from Senegal east to Togo. It inhabits the northern savannas of Africa.
R. r. wardi (Thomas, 1900): Found in Uganda, eastern Democratic Republic of the Congo and eastern Africa.

The total population of this species is 100,000, and while it is decreasing, it is not currently low enough to justify a near threatened rating, though this might change in the near future. At the current time, I cannot see any of the subspecies being in a worse position but can change this if I find out more.

Mountain Reedbuck

The mountain reedbuck has 3 subspecies. The western mountain reedbuck only has 450 individuals still living wild, (shown on the map in red) also known as the Adamwa mountain reedbuck which is restricted to the highlands of Cameroon. The Eastern mountain reedbuck (or Chanlers) has 2900 wild individuals, is found in parts of Kenya and Ethiopia. The Southern moutnain reedbuck, blue, (33,000) is found in the Drakensburg mountains of South Africa.

Southern Reedbuck

The Southern, or common Reedbuck is found in Southern Africa. It is a midsized antelope, standing 134-167cm tall

It was described in 1785 by Pieter Boddaert. Southern reedbucks live in pairs or alone, though occasionally they will form herds of up to 20. They prefer to lie in grass or reed beds in the heat of the day and feed during sunrise and sunset, or sometimes even at night. Old reedbucks are permanently territorial, with territories around 35-60 hectares, and generally live with a single female, preventing contact with rival males. Females and young males perform an ‘appeasement dance’ for older males. Within this territory, it is active all the time in summer, but it is nocturnal in the wet season. It regularly uses paths to reach good sites to rest, graze, and drink water. They are hunted by all the top predators in the area, including Lion, Leopard, Cheetah hyena and wild dog, as well as animals like snakes.

They are easily hunted, and combined with loss of territory to human expansion, the population is down. About 60% occur in protected reserves, but in some countries like Gabon and the DRC are though to almost be locally extinct.

Kob

Red Lechwe antelope are found in a band across Africa, including areas of Eastern, Central and Western Africa.

There are 3 subspecies:

The western kob, is found in the west
The Ugandan Kob is found in sub-Saharan Africa in South Sudan, Uganda and the Democratic Republic of the Congo.
The white eared Kob is found in Western Ethiopia and South Sudan (this is one of the main animals in the huge migration within sudan)

None are currently threatened with extinction. Their total population is 50,000-60,000

Red Lechwe

Red Lechewe is a species of antelope found in the south of eastern African. The red lechwe is native to Botswana, Zambia, southeastern Democratic Republic of the Congo, northeastern Namibia, and eastern Angola, especially in the Okavango Delta, Kafue Flats, and Bangweulu Wetlands. They are found in shallow water, and have a substance on their legs which allows them to run pretty fast. Total population is around 160,000

Four subspecies of the lechwe have been recognized

Common red lechwe (Gray, 1850) – Widely distributed in the wetlands of Zimbabwe, Botswana, Namibia and Zambia. (80,000)
Kafue Flats lechwe (Haltenorth, 1963) – It is confined within the Kafue Flats (seasonally inundated flood-plain on the Kafue River, Zambia). (28,000)
† Roberts’ lechwe (Rothschild, 1907) – Formerly found in northeastern Zambia, now extinct. Also called the Kawambwa lechwe.
Black lechwe (Kobus leche smithemani) (Lydekker, 1900) – Found in the Bangweulu region of Zambia. (50,000)

In addition, the Upemba lechwe (1000) and the extinct Cape lechwe are also considered subspecies by some authorities. Although related and sharing the name “lechwe”, the Nile lechwe (below) is consistently recognized as a separate species.

Nile Lechwe

The Nile lechwe or Mrs Gray’s lechwe is an endangered species of antelope found in swamps and grasslands in South Sudan and Ethiopia.

Nile lechwe can visually signal and vocalize to communicate with each other. They rear high in the air in front of their opponents and turn their heads to the side while displaying. Females are quite loud, making a toad-like croaking when moving. Known predators are humans, lions, crocodiles, cheetahs, wild dogs, hyenas and leopards. They flee to water if disturbed, but females defend their offspring from smaller predators by direct attack, mainly kicking. Nile lechwe are crepuscular, active in the early morning and late afternoon. They gather in herds of up to 50 females and one male or in smaller all-male herds. They divide themselves into three social groups: females and their new offspring, bachelor males, and mature males with territories. A males with territory sometimes allows a bachelor male into his territory to guard the region and not to copulate. They are sexually mature at 2.

Nile lechwe feed on succulent grasses and water plants. They have the special capability to wade in shallow waters and swim in deeper waters, and may feed on young leaves from trees and bushes, rearing up to reach this green vegetation. Nile lechwe are also found in marshy areas, where they eat aquatic plants. Around 32,000 and are classed as endangered

Puku

The Nyala is a spiral horned species

Waterbuck

The waterbuck is a large antelope found widely in sub-Saharan Africa.It was first described by Irish naturalist William Ogilby in 1833.

The common waterbuck is listed as least concern, while the Defassa is listed as near threatened. Only 60% of this subspecies population is in protected areas, so it could get worse, if they are lost.

La Plata Dolphin

La Plata dolphin

Also known as franciscana or toninha, this is a river dolphin, found in the coastal waters of southeastern South America. Being a member of the Inioidea family, it is only capapable of living in saltwater, so is found in the ocean and saltwater estuaries. This has an unfortunate effect of being around the mouth of rivers, and therefore being effected by all the pollutants picked up the whole route of the river.

It is also regularly noted, that this run-off kills off the fish which this dolphin species requires for survival. It was first described in 1844.

It is thought that fewer than 30,000 of these animals remain in the wild.

There is some tourism around this species. As we get links they will appear beneath the news section below.

Baji or Chinese river dolphin

Baija or Chinese river dolphin - Extinct

Almost definitely extinct, this species of river dolphin lived in the Yangtze and was also known as the white dolphin among other names.

The last confirmed sighting was now more than 20 years ago, and given the incredibly polluted state of their river home it is unlikely that any did survive. There may well be much debate in the future, as to whether similar river dolphins from elsewhere could replace them. What is clear is that this is irrelevant for a significant length of time, as it is likely to be many decades before the river is capable of supporting significant populations of fish, never-mind a river dolphin.

Below is a rare clip of it from before extinction, and below is any times that it is mentioned on this site. Given that it is extinct, its mentioning may not be helpful for seeing it, but may well be of interest. Below this video, is an automated list of any articles from this site which mentions this species. Unfortunately, as the species is extinct means that the local population cannot benefit from ecotourism, but there are many other species that still cling on in China. All wildlife has the capacity to bring in money for those who live nearby. Help us make this happen

Bolivian river Dolphin

Bolivian river-dolphin

Bolivian river dolphins were discovered by the Western world in 1832 by Alcide d’Orbigny. Initially considered a subspecies of the Amazon river dolphin, differences in body structure and the isolation of the Bolivian river dolphin meant it was reclassified as its own species in 2012. In a study conducted in 2015, it was also noted that any gene flow between I. geoffrensis (downstream) and I. boliviensis (upstream) would be a one way path flowing from upstream to downstream due to the Teotônio waterfall between them.

Even with gene flow, these populations would also remain morphologically different from each other due to the differences in the environment in which they live. Differences in seasonal water depth and speed would result in morphologically different species. However, for now, these populations are considered subspecies of the same species.

Research is hard to do, as the number of the species is low.

They are listed as endangered. Other threats include several dams, and while there are ways for river wildlife to navigate this, it requires moving through fast water, which this dolphin species does not do.

It is classified as endangered, though estimates of the current population size are hard to find.

Below is a video of this species, and below that is a list of any time it is mentioned on this site. Under this, we hope to add links that will allow you to see them in the wild.

Amazon River Dolphin

Amazon Dolphin

The Amazon river dolphin, (other names include boto, bufeo or pink river dolphin), is a species of toothed whale endemic to South America and is classified in the family Iniidae. Three subspecies are currently recognized: Amazon river dolphin,, Bolivian river dolphin and the Orinoco river dolphin while position of Araguaian river dolphin within the clade is still unclear The three subspecies are each found in a separate river basin (in order) the Amazon basin, the upper Madeira River in Bolivia, and the Orinoco basin.

The Amazon river dolphin is the largest species of river dolphin, with adult males reaching 185 kilograms (408 lb) in weight, and 2.5 metres (8.2 ft) in length. Adults acquire a pink colour, more prominent in males, giving it its nickname “pink river dolphin”. Sexual dimorphism is very evident, with males measuring 16% longer and weighing 55% more than females.

Like other toothed whales, they have a melon, an organ that is used for bio sonar. The dorsal fin, although short in height, is regarded as long, and the pectoral fins are also large. The fin size, unfused vertebrae, and its relative size allow for improved manoeuvrability when navigating flooded forests and capturing prey.

They have one of the widest ranging diets among toothed whales, and feed on up to 53 different species of fish, such as croakers, catfish, tetras and piranhas. They also consume other animals such as river turtles, aquatic frogs, and freshwater crabs. However, this is not particularly surprising, as there are so many forms of life in the Amazon rainforest, and plenty is likely to occasionally find themselves in the river.

In 2018, this species was classed as endangered, by the IUCN with a declining population. Threats include incidental catch in fishing lines, direct hunting for use as fish bait or predator control, damming, and pollution; as with many species, habitat loss and continued human development is becoming a greater threat.

While it is the only species of river dolphin kept in captivity, almost exclusively in Venezuela and Europe, it is difficult to train and often die very young, when kept in captivity..

Life expectancy of the Amazon river dolphin in the wild is unknown, but in captivity, the longevity of healthy individuals has been recorded at between 10 and 30 years. However, a 1986 study of the average longevity of this species in captivity in the United States is only 33 months. An individual named Baby at the Duisburg Zoo, Germany, lived at least 46 years, spending 45 years, 9 months at the zoo.

Below you will find any news articles on Amazon dolphin (though articles with both words also get sucked in). Also we will add any information on where you can go to see these in the wild, beneath both of these.

Agile Mangabey

The agile mangabey is an Old World monkey of the white-eyelid mangabey group found in swampy forests of Central Africa in Equatorial Guinea, Cameroon, Gabon, Central African Republic, Republic of Congo, and DR Congo.

Until 1978, it was considered a subspecies of the Tana River mangabey. More recently, the golden-bellied mangabey has been considered a separate species instead of a subspecies of the agile mangabey.

Similar to other mangabeys, they are active during the day. Although generally tree-living, they do spend a significant portion of their time (12–22%) on the ground, especially during the dry season. It is often heard first, and males have a loud, species-specific call that is believed to be used to space themselves out – in a similar way that wolves operate with howls. Other calls are also used to maintain group cohesion and warn of predators. Group size can be as high as 18 members, led by a single dominant male. Group meetings can be friendly and may involve exchange of members.

Adult males not in groups often travel singly.

Fruit makes up a major portion of the agile mangabey diet. They are known to eat at least 42 different species of fruit. Their tooth structure and powerful jaws allows them to open tough pods and fruits that many other monkeys can not access. Agile mangabeys eat from a number of dominant swamp-forest trees, including Irvingia, Sugar plums when they are fruiting. They also eat fresh leaf shoots from Raffia palm when fruits are scarce. Grass and mushrooms, Invertebrates, bird’s eggs and some vertebrate prey, such as rodents.

As we find links, to help you book to see this species, the links will be added at the bottom of the page.

Primate family tree main and great and lesser apes

Primate family tree

The primates are in some ways one of the most successful families. It is true that many are now endangered, however, unfortunately, that is as a result of the run-away success of the most successful member of the primate family us! Having left the rainforests behind, we have been reducing their coverage dramatically over the last few centuries.

The sad thing, is that while we have pushed many of our closest cousins towards extinction, the loss of forests may well cost us dearly in the future as well. As a species, we need to pull together to meet this challenge. in order to jump to the various families, click on the family of interest above – though all can also be reached by scrolling down.

Great Apes

Range Democratic Republic of Congo (DRC), Rwanda, Tanzania, and Uganda

Eastern Lowland gorilla

Mountain Gorilla

Western lowland gorilla

Cross river gorilla

Great ape Family split is thought to have split from its nearest relative – the gibbon family, around 17 million years ago.

4 million years later the Orangutan family split from the gorilla line and the human/chimp line.

3 million years after this (so around 10 million years ago) the gorilla family split from the Homo (humans) and Pan

Finally the human line (homo) split from the Pan line 5-6 million years ago.

It should be noted, that chimpanzees and Bonobos split from a common ancestor just 1.8 million years ago. This occurred as the two populations ceased to be able to have contact with each other – the Congo rive formed between 1.5 and 2 million years ago.

For more information on each species, click on their photo and this will take you to their page

It should be noted that while I have grouped eastern western and skywalker gibbon together, there is some contention that the skywalker gibbon should be in its own genus, having diverged around half a million years aog