The Black Mamba is one of the most venomous snakes in the world. In the TopTen it would most likely be in seventh place.
The Black Mamba has a black mouth, that’s why its called the black mamba not because of its scale color. The Green Mamba is the same species just a different color, green. What I like about the Black Mamba is that it is the fastest snake on earth. They are 14ft long (4 meters) and 4lbs (1.6 kg).