Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
109
When dragonflies mate, their tails form a love heart.
22
There's a young hippo and a 130+ year old tortoise in a Kenyan wildlife preserve who are best friends and they even sleep and play together.
40
The oldest recorded elephant lived for 82 years.
213
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