adept agile attractive Australia Australian big-footed color colored colour coloured colourful conservation endangered fauna fur golden-yellow-limbs hardy macropod macropodidae macropods mammal mammals Marsupial marsupials native petrogale-xanthopus-xanthopus recovering recovery rock-wallaby rust-coloured South-Australia sure-footed survive surviving survivors thick-fur-coat threatened vulnerable wallaby wildlife yellow-footed-rock-wallaby african broad-mouthed collagen cow creases eating flat-mouthed folds food gray grazer grey heavy herbivore herbivorous hide horns junior keratin large lattice-structured megafauna mother odd-toed-ungulate offspring perissodactyl placid powerful rhino rhinoceros skin snout southern-white-rhinoceros square-lipped rhinoceros strong thick tough white rhinoceros wide-lipped rhinoceros wrinkled wrinkles calf youngster close close-up eye eye-lashes eye-lid