Are those anything like jackalopes? Mythical beasts for impressing tourists? I vaguely recall something about snakes that would bite their own tails to form a circle the size of a bicycle wheel and then roll very fast over long distances. Nonsense, I presume. And drop bears, would that be bears that jump on you out of trees? There _are_ big cats that do that (mountain lions leeping onto deer?), but bears? Næh!