The wisent, also known as European bison (Bison bonasus), is one of two extant species of bison, alongside the American bison. They were hunted to extinction in the wild in southern Sweden in the 11th century, in Southern England in the 12th century, in the Ardennes and the Vosges Mountains in the 15th century, in Transylvania in 1790, in the Białowieża Forest (on the Poland-Belarus border) in 1921, and in the northwestern Caucasus in 1927. In 1927 less than 50 wisent were left in the world, all in zoos.
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