Snake Identifier
Black Mamba (Dendroaspis polylepis)
ASC Leiden - Rwanda 2021 - 041 - A coiled gray snake in the Kandt House Museum - Kigali by Gerard van de Bruinhorst, via Wikimedia Commons, licensed under CC BY-SA 4.0
Cobras & elapids

Black Mamba

Dendroaspis polylepis

One of the world's most feared snakes, the black mamba is Africa's longest venomous snake, renowned for its speed, potent neurotoxic venom, and the black interior of its mouth.

Venomous?
Venomous
Adult length
2-3.2 m (6.5-10.5 ft), exceptionally to 4.3 m
Range
Sub-Saharan Africa (savanna and rocky habitats)

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Overview

The black mamba (Dendroaspis polylepis) is the longest venomous snake in Africa and among the fastest-moving snakes in the world over short distances. Despite its name, its body color is usually olive, gray, or gunmetal brown; the name instead refers to the ink-black interior of its mouth, displayed in a threat gape.

It is widely regarded as one of the most dangerous snakes due to its potent neurotoxic venom, large size, and willingness to deliver multiple rapid bites when threatened, making it a snake of significant medical concern across its range.

How to identify it

A large, slender, fast-moving elapid with distinctive coffin-shaped head.

  • Body color typically olive, gray-brown, or gunmetal, not black; juveniles are paler
  • Interior of the mouth is jet black, displayed as a warning when threatened
  • Head is elongated and somewhat coffin-shaped, narrow and distinct from the neck
  • Smooth scales, round pupils, and a slender, agile build
  • Adults commonly 2-3.2 m, exceptionally reaching over 4 m

Habitat & range

Found across savanna, woodland, rocky outcrops, and semi-arid scrub throughout sub-Saharan Africa, from parts of West Africa across to East and southern Africa. It often uses termite mounds, rock crevices, and hollow trees as retreats and may occupy the same lair for extended periods.

Behavior, diet & reproduction

Diurnal and highly alert, capable of moving quickly across open ground when pursuing prey or fleeing threats. It hunts small mammals and birds using a fast strike-and-release or strike-and-hold technique depending on prey type. When cornered it raises its forebody, spreads a narrow hood, gapes its black mouth, and can deliver repeated bites. Reproduction is oviparous, with clutches typically of 6-17 eggs.

Frequently asked questions

Is the black mamba the deadliest snake in the world?

It is widely regarded as one of the most dangerous due to its potent venom, speed, and large size, though many factors affect overall risk to humans.

Why is it called the black mamba if its body isn't black?

The name refers to the black coloration inside its mouth, which it displays when threatened.

How fast can a black mamba move?

It is among the fastest snakes, capable of brief bursts of rapid movement over open ground.

How big does the black mamba get?

Adults typically reach 2-3.2 m (6.5-10.5 ft), with exceptional individuals exceeding 4 m, making it Africa's longest venomous snake.

Where does the black mamba live?

It inhabits savanna, woodland, and rocky habitats across much of sub-Saharan Africa.

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Black Mamba