Aquariums; Animal-activated pet feeders that include dispensers for releasing pet toy feeder balls with pet food and pet treats therein; Animal activated animal feeders; Animal activated livestock waterers; Animal litter boxes; Apparatus for cleaning teeth and gums using high pressure water for home use; Bird feeders; Cages for household pets; Combs for animals; Electric pet brushes; Electric tooth brushes; Feeding vessels for pets; Pet feeding dishes; Pet feeding and drinking bowls; Pet groo...