Lobsters have blue blood.
476
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
Sharks have been on the planet longer than trees.
14
Squirrels forget where they hide about half of their nuts.
698
Unsinkable Sam (nickname of a German ship's cat) who served on 3 warships, one German, two British, all sank in action. The cat survived each sinking, floating away on wooden planks to rescue.
19
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