The world of animals hides tons of miracles that are sometimes hard to believe. Penguins having knees, birds using makeup, square starfish — all these things seem to be so unusual that you’d think they couldn’t possibly exist on our planet. However, if you continue reading this article, you’ll find out that all of them are actually true.

13. This is what a platypus’ foot looks like.

Jean-Paul Ferrero / ardea.com / East News

12. Penguins have knees.

6. Elephant foot vs Human foot, there’s almost no difference.

, East News

5. Chinese water deer look like vampires.

4. An Indian giant squirrel is multicolored and can be up to 3 feet long.

3. Shark eggs are transparent.

2. This is what an elephant’s tail looks like.

1. Some kinds of 5-pointed starfish can be born square due to a genetic abnormality.

© Shnarfschnarf / Imgur

Bonus: Anna’s hummingbird changes its color every second.

Which facts impressed you the most? Do you know any other interesting things about animals that are not mentioned here? Let’s continue the list together in the comments!

Please note: This article was updated in October 2022 to correct source material and factual inaccuracies.