23. Black Mamba
A misnomer, the venomous snake known as the black mamba ranges in color from gray to dark brown. The young ones are even lighter in color. The name greenish-brownish Mamba didn’t sound as cool. The name comes from he color of their mouths, which are black. These tree snakes hang out in their home country of Africa where they hunt small animals, birds and such. They kill by injecting a potent neurotoxin into their prey, which does not normally include humans. They’d prefer to evade humans, but one wouldn’t want to test the Black Mamba.