african broad-mouthed collagen cow creases eating endangered flat-mouthed folds food gray grazer grey heavy herbivore herbivorous hide horns junior keratin large lattice-structured mammal megafauna mother odd-toed-ungulate offspring perissodactyl placid powerful rhino rhinoceros skin snout southern-white-rhinoceros square-lipped rhinoceros strong thick threatened tough white rhinoceros wide-lipped rhinoceros wrinkled wrinkles calf youngster feeding Mud mud-covered muddy white-rhinoceros alert biological-interaction bird black curious inquisitive Myna myna-birds mynah Noisy plumage precocious square-lipped-rhinoceros symbiosis symbiotic watchful wide-lipped-rhinoceros animal animals asleep brown carnivore cat cats closeup cute domestic domestic cat Domestic short-haired cat European shorthair Felidae feline fur house cat lazy makes newspaper newspapers papers pet pet cat pets portrait read reading relaxed relaxed sleeping cat sleeping sleeping cat sleepy Small to medium-sized cats striped tired tiring toungue whiskers white