After much trying, I was able to get a picture of the often sighted squirrel with the deformed tail. This was taken with my iPhone so I couldn't get a zoom on it. I'll bring my camera and try to get a better close up of it. The squirrel's tail isn't hairless like a rats, it just has a real thin coating of hair with a little tuft at the end. Not at all a bushy tail. I don't know if it's genetic or environmental. Check it out.