Animal-activated animal waterers; Animal-activated pet feeders that include dispensers for releasing pet toy feeder balls with pet food and pet treats therein; Animal litter boxes; Bird cages for domestic birds; Cat litter boxes; Drinking troughs for animals; Drinking troughs for poultry; Litter boxes for pets; Litter trays for pets; Perches for bird cages; Pet brushes; Pet grooming device comprising a built in brush head and an attachment that connects to a water source; Pet litter boxes; Pi...