Amphicyonidae is an extinct family of terrestrial carnivorans belonging to the suborder Caniformia. They first appeared in North America in the middle Eocene (around 45mya), spread to Europe by the late Eocene (35mya), and appear in Asia, and Africa by the early Miocene (23mya). Amphicyonids are often colloquially referred to as "bear-dogs

Dog Bear - Hemicyoninae is an extinct subfamily of Ursidae[2][1] often called "dog-bears", literally "half dog" (Greek: ἡμικυων hemi-kyōn), bear-like carnivoran living in Europe, North America, Africa and Asia during the Oligocene through Miocene epochs 33.9–5.3 Ma, existing for approximately 28.6 million years. They are sometimes classified as a separate family

Otter Bear - Kolponomos is an extinct genus of carnivoran mammal that existed in the Late Arikareean North American Land Mammal Age, early Miocene epoch, about 20 million years ago. It was likely a marine mammal.[1]

Ancient Panda - Ailuropoda is the only extant genus in the ursid (bear) subfamily Ailuropodinae. It contains one living and three fossil species of panda

Indarctos is an extinct genus of bear, endemic to North America, Europe and Asia during the Miocene. It was present from ~11.1 to 5.3 Ma, existing for approximately 6.2 million years.

Agriotherium is an extinct genus of bears whose fossils are found in Miocene through Pleistocene-aged strata of North America, Europe, Africa, and Asia. This long-lived genus persisted from at least ~11.6–2.5 Mya.[2] Materials from the late-surviving A. africanum in Africa have suggested that A. africanum died out during the early Gelasian

Short face Bears - The Tremarctinae or short-faced bears is a subfamily of Ursidae that contains one living representative, the spectacled bear (Tremarctos ornatus) of South America, and several extinct species from four genera: the Florida spectacled bear (Tremarctos floridanus), the North American short-faced bears of genera Plionarctos (P. edensis and P. harroldorum) and Arctodus (A. pristinus and A. simus), and the South American giant short-faced bears of Arctotherium (including A. angustidens, A. vetustum, A. bonariense, A. wingei, and A. tarijense).[1] The group is thought to have originated in eartern North America, and then invaded South America as part of the Great American Interchange.[2]

One of the largest prehistoric bears, the cave bear dominated its way through the steppes and snow-layered valleys of both Europe and Siberia, surviving along with many other dangerous predators and its smaller ursine contenders including the brown bear.