An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268
There was a bear called Wojtek who was adopted by Polish soldiers during WW2. It carried ammunition, wrestled with soldiers, and drank beer.
40
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
Some older/less efficient worker termites will develop 'backpacks' of toxic chemicals that explode when the termite is threatened. They are essentially used as suicide bombers when the colony is being attacked.
8
The oldest recorded elephant lived for 82 years.
213