Bats sleep 18-20 hours per day.
5
Cows can sleep standing up, but they can only dream lying down.
745
A scorpion can hold its breath for up to 6 days.
19
There's a rare breed of pig that looks like a sheep.
14
When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20