Lobsters have blue blood.
476
A scorpion can hold its breath for up to 6 days.
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
When a male honey bee climaxes during sex, his testicles explode and then he dies.
27
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