New research suggests the gut bacteria of red and grey squirrels differ significantly, potentially explaining the decline of the native red and the success of its grey counterpart.

Not all animals retreat to their shelters in cold weather.

Red squirrels that gamble at the game of reproduction outperform their counterparts, even if it costs them in the short term, research finds.

A new study is the first to document personality in golden-mantled ground squirrels. "This adds to the small but growing number of studies showing that individuals matter."

How do squirrels leap through trees without falling? It takes strength, flexibility and finely tuned cognitive skills.

Squirrel feeders laced with contraceptives could be used to suppress grey squirrels in the UK.

With careful observation, you can start to recognize that one sassy squirrel or the cardinal pair who call your neighborhood home.