2. Nile crocodile
With an average length of about 4.2m and weighing up to 410kg, adult Nile crocodiles are the second largest crocodile species currently existing on Earth. Notably, although not as big as its "cousin" saltwater crocodile, the Nile crocodile is very ferocious and one of the scariest "killers" in the wild. Because, recent statistics have shown that, every year, Nile crocodiles carry out about 275-745 attacks on people and 63% of them die.