Grizzly bear (Ursus arctos horribilis) rolling on a frozen pond, captive in Alaska Wildlife Conservation Center, South-central Alaska; Portage, Alaska, United States of America

A captive female Brown bear (Ursus arctos) rests and sleeps on a driftwood log at the Alaska Wildlife Conservation Center with a pond in the background, South-central Alaska; Portage, Alaska, United States of America

Brown bear (ursus arctos) crosses the ice during a low snow winter, captive at the Alaska Wildlife Conservation Center, South-central Alaska; Portage, Alaska, United States of America

Brown bear (ursus arctos) plays in the pond in the Alaska Wildlife Conservation Center, South-Central Alaska; Portage, Alaska, United States of America

Hoof of captive Caribou (Rangifer tarandus), the only captive caribou in Alaska at that time, Alaska Wildlife Conservation Center, South-central Alaska; Portage, Alaska, United States of America

Sitka black-tailed deer (Odocoileus hemionus sitkensis) at the Alaska Wildlife Conservation Center, South-central Alaska; Portage, Alaska, United States of America

A Gray wolf (Canis lupus) female yawns while showing a good wolf profile, captive at the Alaska Wildlife Conservation Center, South-central Alaska in winter; Portage, Alaska, United States of America

Captive Black bear at the Alaska Wildlife Conservation Center in Portage, Summer. Southcentral Alaska.

Sitka Black-tailed Deer (Odocoileus hemionus sitkensis), captive at the Alaska WIldlife Conservation Center; Portage, Alaska, United States of America

Bull moose (alces alces) with antlers in velvet, captive in Alaska Wildlife Conservation Center, South-central Alaska; Portage, Alaska, United States of America

Captive bull Rocky Mountain Elk (Cervus canadensis nelsoni), Alaska Wildlife Conservation Center in winter, South-central Alaska; Portage, Alaska, United States of America

Captive adult Black bear at the Alaska Wildlife Conservation Center in Portage. Southcentral Alaska. Summer.

Black bear (Ursus americanus) cubs playing on the tree branches, South-central Alaska; Alaska, United States of America

Black bear (Ursus americanus) cubs resting on the tree branches, South-central Alaska; Alaska, United States of America

Black bear (ursus americanus) standing on a log in a lush forest, South-central Alaska; Alaska, United States of America

Black bear (Ursus americanus) cub looking out through the lush foliage from a tree branch, South-central Alaska; Alaska, United States of America

Black bear (ursus americanus) standing among the plants and shrubs in a forest, South-central Alaska; Alaska, United States of America

American black bear (Ursus americanus), rescued and at a wildlife refuge between Seward and Anchorage; Alaska, United States of America

Black bear (ursus americanus) sticking his head through two large branches of a tree in a forest, South-central Alaska; Alaska, United States of America

High angle view of a black bear (ursus americanus) standing among the plants and shrubs in a forest, South-central Alaska; Alaska, United States of America

Black bear sow and cub in summer, Southcentral Alaska, USA

Black bear cub climbs a tree in summer, Southcentral Alaska, USA

Black bear among autumn foliage, Southcentral Alaska, USA

Black bear among fall foliage, Southcentral Alaska, USA

Black bear cub (ursus americanus), captive at the Alaska Wildlife Conservation Center, South-central Alaska; Portage, Alaska, United States of America