A cow produces around 200,000 glasses of milk in her lifetime.
373
Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
Cats recognise the voice of their owner, but never evolved to care.
22
Lobsters have blue blood.
476
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2