Only 3% of bird species have penises.
0
The head of a jellyfish is called the "Bell."
6
The reindeer is the only mammal that can see UV light.
17
Sloths take two weeks to digest their food.
243
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
The two oldest cats on record lived to 38 and 34 years old, both were owned by the same owner and lived off a diet of bacon, eggs, broccoli and coffee.
12