One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5
The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
A lion in the wild usually makes no more than twenty kills a year.
186
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57