North American Opossums (Didelphis virginiana) may not be the cutest creatures, but opossums can be rather endearing and are actually quite fascinating as well. Opossums are the only marsupials native to North America. They have prehensile tails and opposable thumbs on their hind feet. Their diet includes bugs, mice, rats, snails, slugs and carrion and they are resistant to most diseases including rabies. They even eat poisonous snakes as they are also resistant to snake venom and are therefore pretty bad ass!