"The last time we knew they were in Arkansas was about 800 to 1,000 years ago when some of their bones were found in ...

But, their hibernation patterns may make them difficult ... Although the squirrels could be mistaken for a chipmunk, Sasse said their defining features are their 13 lines. "Thirteen-lined ground ...

And in eastern and central Pennsylvania, where people of German descent have been watching the groundhog's annual emergence from hibernation for centuries ... The groundhog is a member of the squirrel ...