Things decompose faster in colder climates? Better check your science books again. And their preferences are known, how? Everything that has ever been said about them has been proven wrong, especially when the closest evidence known is a costume shoved in a cooler
I have a theory of an unknown species of my own: The five-eyed, pidgeon-toed, flying gorilla sloth. It prefers muddy water (it is actually a swimming animal, contrary to popular belief), and feeds on ammonia from human urine. Therefore, it does best in the midwest (everybody pees in the water). Noone has ever seen one though, except for me. I was just about to catch it, when I was abducted by aliens. I was pissed!