The sika deer, also known as the Northern spotted deer or the Japanese deer, is a species of deer native to much of East Asia and introduced to other parts of the world. Previously found from northern Vietnam in the south to the Russian Far East in the north, it is an uncommon species that has been extirpated in most areas of its native range, except in Japan, where it is overabundant and present in very large numbers. Its name comes from Shika deer, which is the Japanese for deer.
C. n. aplodontus, northern Honshu
C. n. grassianus, Shanxi, ChinaC. n. keramae, Kerama Islands of the Ryukyu Islands, Japan
C. n. nippon (type species), southern Honshu, Shikoku, and Kyushu[citation needed]
C. n. pseudaxis, northern Vietnam
C. n. pulchellus, Tsushima Island
C. n. sichuanicus, western China
C. n. sintikuensis, Taiwan
C. n. soloensis, Southern Philippines (anciently introduced to Jolo island; of unknown subspecies origin, probably extinct)[6]
C. n. taiouanus, Taiwan
C. n. yakushimae, Yakushima, Japan
C. n. yesoensis, Hokkaido, Japan
Initially coming from central eastern Asia, they have been introduced all over the place by humans. There is also issues all over the place with Sika and red deer interbreeding.
Huge numbers of species have been disappearing from some or all of their original range in the wild. While there are other reasons for animals to disappear from areas, humans...