Jumping fleas can accelerate 50 times faster than the space shuttle.
218
Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Sharks have been on the planet longer than trees.
14
Unsinkable Sam (nickname of a German ship's cat) who served on 3 warships, one German, two British, all sank in action. The cat survived each sinking, floating away on wooden planks to rescue.
19