A litter box, also known as a sandbox, cat box, litter tray, cat pan, potty, pot or litter pan, is an indoor feces and urine collection box for cats, as well as rabbits, ferrets, miniature pigs, small dogs, and other pets that instinctively or through training will make use of such a repository. They are provided for pets that are permitted free roam of a home but who cannot or do not always go outside to excrete their metabolic waste.

The domestic rabbit is the domesticated form of the European rabbit, a member of the lagomorph order. A male rabbit is known as a buck, a female is a doe, and a young rabbit is a kit. There are hundreds of rabbit breeds, originating from all over the world.