Ursus americanus
Black Bear (Ursus americanus), Black Bear Conservation Committee, Black Bears (Ursus americanus), Secrets of Black Bear Hibernation
Ursus maritimus
Natural History of the Polar Bear, Polar Bear - Polar Bears Alive, Polar Bear - theBigZoo.com, Polar Bears, Polar Bears, Useful References: Polar Bears
Urus arctos
Grizzly Bear (Ursus arctos horribilis), Grizzly Bear (Ursus arctos) - ThinkQuest, Grizzly Bear - Ursus arctos horribilis, Grizzly Bear - Eastern Slopes Grizzly Bear Project, Grizzly Bear - Kamchatka: Grizzlies of the Russian, Grizzly Bear Reintroduction - Bitterroot Coalition, Grizzly Bears, Interagency Grizzly Bear Committee, Shadow of The Bear, Sierra Club Grizzly Bear Ecosystems Project
Faune Explo
Photos by Alain and Isabelle Boyaval of the brown bear or grizzly (Ursus arctos) and the American black bear (Ursus americanus) and their tracks. [English and French]
Sun Bear - Ursus malayanus
Short illustrated description of this bear of southeast Asia.