Antilocapridae
The pronghorn is a unique North American mammal. Its Latin name, Antilocapra americana, means "American goat-antelope," but it is not a member of the goat or the antelope family and it is not related to the antelopes found in Africa. The pronghorn is the only surviving member of the Antilocapridae family and it has been in North America for over a million years! The pronghorn is the fastest animal in the Western Hemisphere. It can run at speeds of up to 60 miles per hour and it can run long distances at speeds of 30-40 miles per hour.