Bison (American Buffalo) Once nearly driven to extinction, bison have been successfully reintroduced to the park and are now a common sight.
Prairie Dogs These small, burrowing rodents live in large colonies called "towns" and are a key species in the prairie ecosystem.
Black-Footed Ferret One of North America's most endangered mammals, this ferret has been reintroduced to the park as part of conservation efforts.
Pronghorn Antelope Known for their speed, pronghorns are one of the fastest land animals in North America.
Badlands Snakes Several species of snakes, including the prairie rattlesnake, inhabit the park.
Bighorn Sheep These animals are known for their impressive horns and agility on rocky terrain.