One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
A puppy is born blind, deaf, and toothless.
16
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5
There's a rare breed of pig that looks like a sheep.
14
The oldest recorded elephant lived for 82 years.
213
The Basenji dog is the only dog that is not able to bark.
4