There is a sea snail that wears a suit of iron plated armor. It is the only known animal to use iron sulphide as skeletal material.
9
A 42-foot sperm whale has about 7 tons of oil in it.
209
Parrot parents "name" their children with a signature call.
112
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
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
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20