Black Mamba snakes have a length of 2.5m to 4.45m. Their venom has killed thousands of people around the world.

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With a length of 2.5 to 4.45m, the Black Mamba (Dendroaspis polylepis) is the world's fastest snakes, reaching speeds of 16-20km / h.(Photo: National Geographic)

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The skin of Black Mamba is brown.They were called black Mamba because their mouths were black.(Photo: Flickr)

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Famous for aggressive and possessing deadly venom, they are one of the world's most unique snakes.(Photo: Flickr)

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Black Mamba crawls fast and very fierce when detecting enemies.Snake heads are coffins and they can live for 11 years.(Photo: quantumbooks.com)

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Because they crawl faster than runners, they are a big threat to people.(Photo: fieldherpforum.com)

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Distributed in the southern and eastern regions of Africa, they often hide in caves or tree holes, preferring open, low spaces.(Photos: Wikipedia)

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Black Mamba often hunts during the day and returns to the cave to sleep at night.(Photo: asbmb.org)

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Normally, if you see people, they are very shy and hide.However, if people feel threatened, they become aggressive and very dangerous.(Photos: Wikipedia)

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The sight of a black Mamba on the tree.(Photo: Flickriver)