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
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
Only 3% of bird species have penises.
0
It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
109
A zoo in China gave a gay penguin couple the opportunity to raise a chick.
11
The largest earthworm on record was found in South Africa and measured 22 feet.
151
When cats are happy, they may squeeze their eyes shut.
10
When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5