While deer may not instantly come to mind when thinking of dangerous animals, you should take caution if you come across this species in Yosemite National Park.

Black bears are skilled anglers, moving with surprising stealth and grace before striking at an unsuspecting fish.

Colorado once had different bear species roaming its wilderness, but sadly, that's no longer the case. Here's what we know.

Merriam, C. H. 1918. Review of the grizzly and big brown bears of North America (genus Ursus) with description of a new genus, Vetularctos. 41 40. Type Status Type Preparation Skull Sex Male Stage Old ...

The cost of research: Lasting effects of capture, surgery and muscle biopsy on brown bear (Ursus arctos) movement and physiology. Animal Welfare 32, e75. A fundamental principle of research ethics ...

Issues of choice and control in the behaviour of a pair of captive polar bears (Ursus maritimus). Behavioural Processes 73(1), 117–120. The provision of animal control over aspects of their ...