Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
Squirrels forget where they hide about half of their nuts.
698
Cows can sleep standing up, but they can only dream lying down.
745
When dragonflies mate, their tails form a love heart.
22
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
The Hercules beetle, despite weighing only 100 grams, can lift 8 kilograms, making it one of the proportionally strongest animals in the world.
8