Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
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
Bats sleep 18-20 hours per day.
5