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

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

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

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

American black bear (ursus americanus) cub climbing a cottonwood tree to the top where it wintered and hibernated, South-central Alaska; Alaska, United States of America

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

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

CAPTIVE: Black bear in a Cottonwood tree at the Alaska Wildlife Conservation Center, Southcentral Alaska, USA

CAPTIVE: Black bear in a Cottonwood tree at the Alaska Wildlife Conservation Center, Southcentral Alaska, USA

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

Close up of a brown bears (ursus arctos) resting on the grass, captive in Alaska Wildlife Conservation Center, South-central Alaska; Portage, Alaska, United States of America

Captive brown bear and visitors at the Alaska Wildlife Conservation Center in Portage, Alaska. Summer.

Black bear (Ursus americanus) cubs playing on the tree branches, 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

Adult Black bear climbing a tree, Southcentral Alaska, USA

Black bear cub climbs a tree trunk, Southcentral Alaska, USA

Sow Black bear and cub in a tree, Southcentral Alaska, USA

Black bear sow and her cub sitting next to a tree trunk, Southcentral Alaska, USA

Black bear cub plays with its mother during summer, Southcentral Alaska, USA

Black bear cub plays with its mother during summer, Southcentral Alaska, USA

Two bear cubs in a tree in summer, Southcentral Alaska, USA

Young Black bear playing on the ground at the base of a tree trunk in summer, Southcentral Alaska, USA

Black bear cub (Ursus americanus) climbing in a dead tree, captive in the Alaska Wildlife Conservation Center; Portage, Alaska, United States of America