Asian black bear
Along with sun bears, Asiatic black bears are the most typically used species in areas where bears are either used in performances or as pets. Asian black bears have an outstanding learning ability in captivity, and are among the most common species used in circus acts. According to Gary Brown:
Short-faced bear
"Arctodus" moved in a pacing motion like a camel, horse, and modern bears, making it built more for endurance than for great speed. "A. simus", according to these arguments, was ill-equipped to be an active predator, leading some to conclude that it was a kleptoparasite, using its enormous size to intimidate smaller predators, such as dire wolves, saber-tooth cats, and American lions, or chase them from their kills and steal their food. This idea was challenged in a 2013 study of the micro-wear of the teeth of various extant and extinct bears. The researchers concluded that the short-faced bear was not a pure scavenger and in fact was even less of a scavenger than the modern polar bear. A 2010 study concluded that the species was neither a super-predator nor pure scavenger but an opportunistic omnivore like modern brown bears.