One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
Early American humans hunted car-size armadillos and used their shells for houses.
12
The Hercules beetle, despite weighing only 100 grams, can lift 8 kilograms, making it one of the proportionally strongest animals in the world.
8
The elephant brain weighs about 6,000g.
274
The difference between antlers and horns is that antlers are shed each year and are made of bone while horns are kept for life and are made of living tissue and bone with a sheath that is very similar to human finger nails.
10