Which extinct bear genus includes the giant short-faced bear?

Arctodus is the extinct bear genus that includes the giant short-faced bear.

The giant short-faced bear is formally known as Arctodus simus, one of two recognized species in the genus. Its close relative, Arctodus pristinus, is called the lesser short-faced bear. Arctodus belonged to Tremarctinae, the bear subfamily that also includes the living spectacled bear of South America.

Arctodus simus lived across much of North America during the Pleistocene. Its fossils show a broad skull, relatively long limbs, and a powerful body. Although older popular accounts portrayed it as an exceptionally specialized predator, many recent interpretations describe it as a large, flexible omnivore that could eat vegetation, scavenge carcasses, and take animal prey.

The giant short-faced bear disappeared roughly 12,800 years ago, near the end of the Ice Age. Its extinction occurred during a period of major climatic and ecological change, but the precise causes remain debated. Arctotherium was another giant extinct bear genus, but it belonged to South America rather than containing Arctodus simus.