Dogs sometimes fake being sick to get attention.
26
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
The male seahorse carries babies and 'gives birth' to them instead of the female.
7
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
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 colossal squid has the largest eyes in the world.
4