Happy International Polar Bear Day! For 21 years, conservation nonprofit Polar Bears International has celebrated these ...

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 ...

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 ...

The baby bears are "cute as all get out, but noisy," one Facebook user said.

In a rarely documented case, a female polar bear was spotted interacting with two cubs, including one that wasn't her own, in the Churchill Wildlife Management Area, northern Canada.

Kiska the polar bear has been a charismatic character at the Albuquerque BioPark since 1997, wowing visitors with his white coat, huge paws and playful demeanor. Zoo-goers celebrated their bear for ...

Polar bears near the remote archipelago of Svalbard are getting heavier, not thinner, even as the sea ice they depend on continues to shrink. New research points to conservation history as a key ...