what kind of animal is the last mentioned one?
It is a species of artiodactyl, often known colloquially in North America as the American antelope
Pronghorn
 is a species of artiodactyl (even-toed, hoofed) mammal indigenous to interior western and central North America. Though not an antelope, it is often known colloquially in North America as the American antelope,
what is the difference between puma cougar and mountain lion In the United States and Canada, it is also called "mountain lion" where can you find it? America,  In the Santa Ana Mountains what sort of places does it live in? It prefers steep canyons, escarpments, rim rocks, and dense brush. how did it get it's name? The word 'cougar' is borrowed from the Portuguese "çuçuarana", via French; it was originally derived from the Tupi language. what do they feed on? The cougar will eat any animal it can catch, from insects to large ungulates : horses, fallow deer, caribou, mountain goat, coyote, American badger and pronghorn.
wiki:22058963
Pronghorn [SEP] Introduction
The pronghorn (, ) ("Antilocapra americana") is a species of artiodactyl (even-toed, hoofed) mammal indigenous to interior western and central North America. Though not an antelope, it is often known colloquially in North America as the American antelope, prong buck, pronghorn antelope, prairie antelope, or simply antelope because it closely resembles the true antelopes of the Old World and fills a similar ecological niche due to parallel evolution. It is the only surviving member of the family Antilocapridae. During the Pleistocene epoch, about 12 antilocaprid species existed in North America. Three other genera ("Capromeryx", "Stockoceros" and "Tetrameryx") existed when humans entered North America but are now extinct.