Female polar bear protecting her cub at Nanuk Polar Bear Lodge (VIDEO)

Polar bears Kai and Gerda had twins at Novosibirsk Zoo (VIDEO)

Three black bear orphans receive care at the Oregon Zoo veterinary center (VIDEO)

Beautiful little polar bears at Animal Kingdom Nuenen (VIDEO)

Healthy Polar Bear Cubs Born At Dierenrijk Mierlo, Mother and the Newborn are doing Well (VIDEO)

Grizzly Cubs of the Year Playing and Exploring Canada's Rockies (VIDEO)

Bear Simone and Her Four Cubs First Visit, The little one trying to squeeze it’s too-fat self through the railing is Hysterical (VIDEO)

Activist documents feeding time routine for orphaned bear cubs (VIDEO)