Okay: default position: Cats have four-fingered paws. So do foxes, coyotes, and dogs Rats, squirrels, raccoons, weasels and mice have hands; rabbits have long snowshoe feet; goats and horses have hooves, chickadees and other birds have tricorn feet with long toes and talons. These tracks are none of the above. Humans are out. That leaves one-legged something that didn't eat the sunflower seeds or an alien. They probably went home by now.