Y chromosome analysis associated wisent and American bison. However, Y chromosome analysis associated wisent and American bison. The company name translates as Wisent. The American bison is very closely related to the wisent or European bison. This medieval forest is home to rare European bison (wisent). Poland remains the world's breeding centre for the wisent. Fauna included aurochs, wisent, moose and red deer. Modern wisent herds keep hybrids well isolated from pure wisent. In these forests roamed animals such as aurochs, wisent, moose and red deer. The last wild wisent in the world was killed by poachers here in 1927. The first example is the Wisent. With wisent, this was originally done in an attempt to reinvigorate the declining wisent population. Local poaching continued; finally, in 1927, the last three Caucasian wisent were killed. The American bison and European bison (wisent) have been hybridized with domestic cattle. The first example of this partnership is the Wisent.