Temporal range: Oligocene–Miocene
Ursavus is an extinct genus of ursid carnivoran mammals that existed in North America, Europe, and Asia during the Miocene, living from ~23—5.3 Ma, existing for approximately . It evolved from the bear-dog The genus apparently dispersed from Asia into North America about 20 Ma, becoming the earliest member of the subfamily Ursinae in the New World. Qiu points out that if a questionable specimen of Ursavus reported in North America is validated, Ursavus may have evolved in North America and dispersed westward into Asia. The higher number of fossils in Europe grading toward eastern Asia make the westward dispersal unlikely.
In life, the various species would have been between cat-sized for the smaller species, and wolf-sized for the larger members of the genus  and were mainly ground-dwelling omnivores or hypocarnivores.
Currently, only U. orientalis, from the Shanwang diatomite of Early Miocene China, is known from a complete skeleton. However, U. orientalis may have been reassigned to the genus Ballusia and is thus no longer considered part of Ursavus. 
Most other species are known from teeth and skull fragments. A complete skull has been found in the Gansu region of China  of a new species dubbed U. tedfordi. From the late Miocene, it was about the size of a wolf and is believed to be nearest ancestor of most modern bear species apart from the Giant Panda and Spectacled Bear.
Sites (not complete) and specimen ages:
- Pawnee Buttes Site, Weld County, Colorado (U. pawniensis) ~23.03—5.3 Ma.
- Shanwang diatomite, Shanwang, China (U. orientalis) ~17-16 Ma. May belong to the genus Ballusia 
- Pasalar site, Bursa, Turkey (U. primaevus) ~16—13.7 Ma.
- Baigneaux-en-Beauc, Alsac, France (U. brevirhinus) ~16.9—16.0 Ma.
- Hambach mine horizon 6C, Germany (U. elmensis) ~16.9—13.7 Ma.
- Yost Farm Site, Saskatchewan, Canada (U. primaevus) ~16.3—13.6 Ma.
- Myers Farm Site, Valentine Formation, Webster County, Nebraska (U. brevirhinus) ~16.3—13.6 Ma.
- Lufeng site, Yunnan, China (U. depereti) ~7-6 Ma.
- Linxia Basin Gansu, China (U. tedfordi) ~9-7 Ma. 
In popular culture
Ursavus was featured briefly in the National Geographic documentary "Evolutions: Bear Necessities."
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