Animal-activated pet feeders that include dispensers for releasing pet toy feeder balls with pet food and pet treats therein; Automatic pet waterers; Bird feeders; Cages for household pets; Cages for pets; Cat litter boxes; Combs for animals; Drinking troughs for animals; Drinking vessels; Electric pet brushes; Filters for use in cat litter boxes; Household storage containers for pet food; Pet brushes; Pet feeding and drinking bowls; Pet feeding dishes