The Black Mamba (Dendroaspis polylepis) is one of Africa's most dangerous snakes and feared in East, Central and Southern Africa. It's aggressive when cornered and will not hesitate to strike. It can reach speeds of up to 12 mph (20 km/ph). It's the largest venomous snake in Africa with adults reaching an average of 8 feet in length (2.5m). Black Mamba's are not black at all, but brown/olive skinned. Their mouths are inky black which they show when threatened. Black Mambas live in savanna, scrub, tree hollows, and sometimes people's homes. If a Black Mamba encounters prey it can strike up to 12 times, each time delivering enough neuro and cardio-toxic venom to kill a dozen men within 1 hour. Without anti-venom, the mortality rate is 100%.