Giraffe (Giraffa camelopardalis), tallest mammal, native to Africa, reaching 18 ft (5.5 m), with extremely long neck (up to 7 ft/2.1 m) and legs. Its buff-colored coat is spotted with red-brown patches. A short, bristly mane runs along its spine from head to tail. Giraffes live by grazing on trees. They are speedy runners.