The cat brain weighs about 30g.
167
Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
Macaques monkeys in Japan learned to steal purses and wallets, take out the coins, and use them to buy drinks and snacks from vending machines.
26
The reindeer is the only mammal that can see UV light.
17
Jumping fleas can accelerate 50 times faster than the space shuttle.
218