Gaboon Viper. These snakes are the largest vipers in the world. Their fangs can get to be up to two inches long. They also have hemolytic venom.

This is the "happy face" of the Gaboon Viper (notice the sheathed fangs). Once those fangs are unsheathed, the Gaboon Viper is deadly venomous. It has a fierce arrow- shaped head and a striking pattern on its back!