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
Vampire bats adopt orphans, and are one of the few mammals known to risk their own lives to share food with less fortunate roost-mates.
402
Sheep, goats, octopuses, and toads have rectangular pupils.
7
A puppy is born blind, deaf, and toothless.
16
Sharks have been on the planet longer than trees.
14