Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Mosquitoes don't just bite you, they also pee on you.
11
Using a remote-controlled camera, biologists caught dolphins getting high by sucking on puffer fish. They were even caught passing the puffer fish around.
23
In Australia, there are spiders big enough to eat snakes.
20
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
Vampire bats adopt orphans, and are one of the few mammals known to risk their own lives to share food with less fortunate roost-mates.
402
Only 3% of bird species have penises.
0
Camels and llamas can cross breed. The offspring is called a ‘Cama’.
10