Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
Cats sleep for 70% of their lives.
8
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
Sharks, like other fish, have their reproductive organs in their chests.
248
The Hercules beetle, despite weighing only 100 grams, can lift 8 kilograms, making it one of the proportionally strongest animals in the world.
8