Dogs sometimes fake being sick to get attention.
26
The ancestor of all domestic cats is the African Wild Cat which still exists today.
12
Whales and dolphins can't taste anything other than salt.
11
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
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