A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
When a male honey bee climaxes during sex, his testicles explode and then he dies.
27
The most expensive cow in the world was sold in 2009 for $1.2 million.
-3
The oldest recorded elephant lived for 82 years.
213
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
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17