squirrels killing squirrels. It's been told that there are cannibalistic gray squirrels out there, just as there are the same among hamsters, rats, gerbils, and cats when their babies are threatened....
No.
Technically yes, but they just know how to fly unlike a normal squirrel!
Yes - it is one of the most common species of squirrels.
I've seen a squirrel chase another up a tree. Sure it looked kind of nasty but that's just nature. Haha!