BERLIN -- Germany's oldest zoo, which is home to the world's largest variety of species, welcomed an adorable polar bear cub. Polar bear mother Tonja gave birth to her cub on Dec. 1. The cub has ...

Researchers in northern Canada have observed a rare case of polar bear adoption, capturing video footage of a wild female bear caring for a cub that was not her own. "Cub adoption is relatively rare ...

Add Yahoo as a preferred source to see more of our stories on Google. In a rare occurrence, researchers say a polar bear mom adopted a cub that wasn't her own. Indiana's Curt Cignetti ahead of Monday ...

Scientists studying polar bears were greeted with a most unexpected surprise during a recent tracking expedition in northeastern Manitoba. A polar bear mother and her cub were walking near Churchill ...