amphibian animal aquatic beast biped brute canine cannibal carnivore cosmopolite creature creeping thing critter cur dog dumb animal dumb friend feline gnawer herbivore hound hyena insect insectivore invertebrate living being living thing mammal mammalian marsupial marsupialian mongrel omnivore pig polecat primate quadruped reptile rodent ruminant scavenger serpent skunk snake swine ungulate vermin vertebrate viper whelp worm