Borissiakia is an extinct genus of chalicothere, a group of herbivorous, odd-toed ungulate (perissodactyl) mammals, that lived during the late Oligocene in Kazakhstan. They had claws that were likely used in a hook-like manner to pull down branches, suggesting they lived as bipedal browsers.
Borissiakia reached in length and reached tall at the shoulders. It could weigh up to .
References
Sources Classification of Mammals by Malcolm C. McKenna and Susan K. Bell