Giraffe (Giraffa camelopardalis)
One of the last survivors of an ancient lineage, the modern giraffe is specialized for browsing in treetops. The world’s tallest mammal, it stands up to 5.8 m (19 ft) tall on stilt-like legs. With its long tongue, it plucks leaves at heights no other ground-dwelling mammals can reach. The tongue is tough enough to wrap around thorns.