A pet can be acquired from an animal shelter, a breeder, and from private transactions, typically due to the giving away of extra newborns after the birth of a litter. See also pet adoption. Because of environmental and public safety concerns, some pets are illegal in many jurisdictions.
In veterinary medicine, dogs and cats are often considered "household" pets, while all other animals are grouped into either "farm animals" (such as horses, cows, or sheep) or "exotics" (including pocket pets, birds, and reptiles).
