Cats: The cat is a domestic species of small carnivorous mammal.
Dog: The dog or domestic dog is a domesticated descendant of the wolf, and is characterized by an upturning tail.
Duck: Duck is the common name for a large number of species in the waterfowl family Anatidae, which also includes swans and geese.
Ferret: The ferret is the domesticated form of the European polecat, a mammal belonging to the same genus as the weasel, Mustela of the family Mustelidae.
Frog: Frogs are a diverse and largely carnivorous group of short-bodied, tailless amphibians composing the order Anura.
Gopher: Pocket gophers, commonly referred to as gophers, are burrowing rodents of the family Geomyidae. About 35 species of gophers live in Central and North America.
Monkey: Monkeys are haplorhine primates, a paraphyletic group generally possessing tails and consisting of approximately 260 known living species.
Parrot: Parrots, also known as psittacines, are birds of the roughly 393 species in 92 genera that make up the order Psittaciformes, found in most tropical and subtropical regions.
Penguin: Penguins are a group of aquatic flightless birds.
Squirrel: Squirrels are members of the family Sciuridae, a family that includes small or medium-size rodents.