Black mamba
Overview
The black mamba also called the common black mamba or black-mouthed mamba, is the longest venomous snake
Venomous snake
"Poisonous snake" redirects here. For true poisonous snakes, see Rhabdophis.Venomous snakes are snakes which have venom glands and specialized teeth for the injection of venom...

 in Africa
Africa
Africa is the world's second largest and second most populous continent, after Asia. At about 30.2 million km² including adjacent islands, it covers 6% of the Earth's total surface area and 20.4% of the total land area...

, averaging around 2.5 to 3.2 m (8.2 to 10.5 ft) in length, and sometimes growing to lengths of 4.45 metres (14.6 ft). Its name is derived from the black colouration inside the mouth rather than the actual colour of its scales which varies from dull yellowish-green to a gun-metal grey.
 
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