The elephant brain weighs about 6,000g.
274
Bats sleep 18-20 hours per day.
5
In 1918, a homing pigeon saved over 190 American soldiers by delivering a message to nearby support despite having been shot through the breast, blinded in one eye, covered in blood, and with a leg hanging on by just a tendon.
22
Alligator snapping turtles can live for over 150 years. Scientists know this because some of the turtles had musket balls in their stomachs.
271
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
In Australia, there are spiders big enough to eat snakes.
20