Pet or domestic animal
The word, Domestic, indicates that a sort of animal has lived beside humans for so many years that they are no longer deemed wild. Humans keep many kinds of animals as pets (birds, fish, rabbits) but also they have been with people for hundreds of years, they are however not domestic. It needs thousands of years to take the wild out a sort of animal. Dogs and cats are the most common household animals. Here in the image there are two sorts. One living outside the other pair inside. Who is who?