african broad-mouthed collagen creases endangered flat-mouthed folds gray grazer grey heavy herbivore herbivorous hide horns keratin large lattice structured mammal megafauna odd-toed ungulate perissodactyl placid powerful rhino rhinoceros skin snout southern white rhinoceros square-lipped rhinoceros strong thick threatened tough white rhinoceros wide-lipped rhinoceros wrinkled wrinkles animal Asia beast bos-taurus bovine cattle cloven-hooved common control cow cud-chewing dairy-cow domesticated Ears eating eye fawn grass grazing greenery head individual landscape leg livestock moving nature neck plants quadruped quiet restraining restraint ropes ruminant rural-area solitary tethered Ungulate weeds boys cheeky daring access admit arrive attention bell closeup color colored colorful colors colour coloured colourful colours communication decorative detail door doorway enter entry entryway get in give access go in handicraft horn in house knocker let in lion loud make an entrance move in multicolored multicoloured old open opening pop in port portal rapper shape star wooden accessories angles antique-cars Antiques appearance automobiles autos car car-clubs car-enthusiasts care cars classic classifications collectors engines exotic historic historical history hobby investment lamp lamps lights maintained maintenance motor motor-car motor-cars original parts rare rarity restoration restore restored running-boards serviced special-interest transport transportation unmodified vehicles veteran vintage wheels