In conversation with a friend the other night I asserted that squirrels hibernate; they do not. Chipmunks do, and that is what I had personal experience with, but not so squirrels; they become dormant and you rarely see them, but it is not true hibernation.
What I have personal experience with is Chipmunks, who do enter hibernation. If you make note of where chippie burrows are in the summer, and in the very early spring tunnel down to them, it is not hard to find one hibernating, curled up into a little comma, heartbeat barely discernable.
And stick it in your sister’s underwear drawer.
Or so I’m told.