Pocket pets is a term that is commonly used to refer to small mammals kept as a household pet. Examples include the more common species, such as rabbits, hamsters, gerbils, guinea pigs, ferrets, mice, and rats; however, more exotic species, such as sugar gliders, chinchillas, even prairie dogs, have been kept as “pocket” pets. The diseases listed here are some of the most important transboundary diseases of pocket pets. Some of these are zoonotic.