Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Squirrels forget where they hide about half of their nuts.
698
Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2
The largest earthworm on record was found in South Africa and measured 22 feet.
151
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 elephant brain weighs about 6,000g.
274