Jellyfish as a species are actually older than dinosaurs and sharks.
383
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
The cat brain weighs about 30g.
167
During World War 1, starving wolves amassed in such great numbers that Germans and Russians had a temporary cease fire to fight off the wolf attacks.
45
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
A cow produces around 200,000 glasses of milk in her lifetime.
373
Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
10