Eels have two hearts. See more

Lobsters have pale blue blood. See more

The mantis shrimp has an extending claw that can punch a hole through a glass jar. See more

Icthyomaniacs are people who are crazy about fish. See more

99% of all animal species that ever lived on Earth are now extinct. See more

Snakes have one lung. See more

Male lions can sleep for up to 20 hours a day. See more

The turkey was wrongly named after what was thought to be it's country of origin. See more

Crocodiles swallow stones to help them dive deeper. See more