The largest earthworm on record was found in South Africa and measured 22 feet.
151
When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
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
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
109
The reindeer is the only mammal that can see UV light.
17