5. Blue Krait
The blue kraits are also known as Malayan Kraits. These are amongst the deadliest snake species in the world. They are mainly found in Eastern Asia, Indonesia and South Korea. About 60 % blue krait species kill the big animals, even can attack the elephant colonies. These are nocturnal snakes, and known for their aggressive nature. When they are angry, they even can attack the companions of the same snake species. It is better for you to stay away from their habitats because blue kraits can attack you all of a sudden, leading to cramps, tremors and even death.