Fastest land animal alive, hitting 70mph in about three seconds, which puts most supercars to shame.
Fun fact: Cheetahs can't roar — they chirp and purr instead, which is oddly adorable for a 70mph predator.
Been pottering around the ocean looking exactly the same for about 500 million years, fair play to them.
Fun fact: The nautilus lineage has survived virtually unchanged for over 500 million years, predating dinosaurs by 265 million.