4. Crocodile

Killing up to 2,000 of people a year, it takes is a good look at one of these prehistoric beasts to realize just how deadly they can be. Crocodiles can be found in the southern U.S., the Tropics, Africa, Asia, and Australia, and love the taste of human flesh just as much as that of any other unsuspecting animal it sees. The saltwater and Nile crocodiles are the most dangerous. It eats a wide variety of animals, living and dead. Its eyes, ears, and nostrils are located high on the head, which allows a crocodile to see and hear its prey. It ranges from 5 to 20 feet long.