A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Giant Anteaters' front legs look like a panda.
48
A cow produces around 200,000 glasses of milk in her lifetime.
373
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
Jellyfish as a species are actually older than dinosaurs and sharks.
383
A group of kittens is called a "kindle".
10