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
The Pistol Shrimp can snap its claws together to create a sound of 218 decibels, louder than as supersonic jet at full speed. It only lasts for 1 millisecond. The snapping action also creates a bubble that is greater than 5000 Kelvin, close to the surface temperature of the sun.
21
The elephant brain weighs about 6,000g.
274
The head of a jellyfish is called the "Bell."
6