Ключевые слова: animal, bacteria, box, care, cat, clean, dirty, domestic, education, feline, filler, green, hygiene, hygienic, indoors, kitten, litter, litter box, messy, net, object, paddle, pet, plastic, problem, rectangle, sand, scoop, small, supply, taming, teach, to train, toilet, tray, urine, white, young,