Grey squirrels, or Eastern grey squirrels, primarily live in the Eastern half of the U.S. and southern Canada. There is also a healthy population in the U.K., where they were imported in the 19th ...

Rodents pumped up on steroids run wild across the Canadian tundra each summer. Now, new research has uncovered how they do it without succumbing to nasty side effects like "roid rage." In the summer, ...

As temperatures rise in the North, scientists say it’s affecting how Arctic ground squirrels hibernate — and it could have serious consequences for the species. The furry critters survive the harsh ...

Spring arrives much later in the Arctic than elsewhere in Canada. For these Arctic ground squirrels, it's a very busy time — they've been asleep underground for the past eight months! In order to ...