When female polar bear X33991 first emerged from her maternal den in northeastern Manitoba this spring, she had one young cub toddling around by her side. Months later, researchers spotted X33991 ...

A mother polar bear has made the decision to adopt - a move that scientists say is extremely rare - and the new family was caught on video. Researchers had tagged the five-year-old mother, also known ...

A polar bear mom emerged from her den with one cub, but was later seen in Churchill, Manitoba, with two. Researchers say she likely adopted an abandoned cub, only the 13th case observed in 45 years.

When scientists in Canada came across a female polar bear with two cubs in the fall, they made an unusual discovery: One of the young was not her own offspring but instead a rare documented example of ...

Researchers tracking wild polar bears in northern Canada witnessed something exceedingly rare this fall: a mother bear adopting a cub that was not biologically her own. The five-year-old mother bear ...

In the remote, icy expanse of the Arctic, the survival of a species begins with a remarkable act of resilience and devotion. The journey of a polar bear mother, from conception to raising cubs in one ...

POWELL, Ohio -- An 8-week-old polar bear cub at an Ohio zoo is doing well after being taken care of by staff when her mother stopped caring for her. The staff at the Columbus Zoo and Aquarium removed ...

This is an extremely rare occurrence, researchers said — only 13 instances of the act have occurred in a group of 4,600 polar bears recorded over the last 45 years Researcher Evan Richardson said, "It ...