15. The African Goliath Frog
If you are waiting for this frog to turn into a handsome prince, keep waiting. This African giant merely averages 13 inches in length and can reach well over seven pounds. Take a look at the frog here for your own interpretation of this large amphibian. What can you possibly feed an animal this large? They will eat anything ranging from insects, worms, and other non-standard cuisine including other frogs and large snakes. Be cautious because this frog might try to eat you if you come near it.