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.
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.