Which is the fastest snake on land?

Which is the fastest snake on land?

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Black mambas are fast, venomous and aggressive. They are Africa's longest venomous snake, reaching 14feet in length. They move at a speed of 12.5miles/hr.

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Black mambas are shy and prefer to escape when disturbed. But they become aggressive and show their black mouth, when confronted. The black mamba has the fastest strike in the world. 

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Black mambas are found in Savannah, woodlands and Rocky Mountains.They commonly prey on rats, birds and bats. Once they set a target on the prey, black mambas chase the prey with their exceptional speed and strike the prey, releasing a neurotoxic venom into the animal.They digest their prey in 8 to hours.