The wisent, or European bison, is the heaviest surviving land animal in Europe, and the Przewalski's Horse is an endangers wild horse native to China and Mongoliaboth according to Wikipedia. As for "living in the wild," those are some of the largest and well-prepared wild carrots I've ever seen.
Michael Urban/AFP - Getty Images
A Przewalski horse jumps next to a wisent in their new wilderness region "Sielmann's natural landscape Doeberitzer Heide" on May 3, 2010 near Berlin. The foundation realises projects as the reintroduction of Przewalski horses and wisents to an area of 2000 hectare, where the animals will be able to live in the wild.