Head to head
Mamba vs Cobra
Mambas and cobras are Africa's two most notorious snakes, and they are fairly close relatives within the elapid family. The differences are in the body shape, the threat display, and, for cobras, the ability to spit.
| Mamba | Cobra | |
|---|---|---|
| Family | Elapidae (genus Dendroaspis) | Elapidae (Naja and relatives) |
| Build | Slim, long-tailed, large-eyed | Stouter, medium eyes |
| Threat display | Rears, gapes black mouth, slight neck spread | Rears and spreads a full hood |
| Can spit venom | No | Yes, in several species |
| Venom type | Fast neurotoxins | Mainly neurotoxins; some tissue damage |
| Temperament | Nervous, flees readily | Will stand and hood if cornered |
| Where | Sub-Saharan Africa | Africa and southern Asia |
| Number of species | Four | Around 30 (true cobras and relatives) |
Mamba vs Cobra: common questions
Is a mamba a kind of cobra?
No, but they are close relatives. Both belong to the family Elapidae, and both have the short fixed fangs and neurotoxic venom that define it, but mambas form their own genus, Dendroaspis, with just four species, while the cobras are a separate group of genera centred on Naja. The two split from a common elapid ancestor and then specialised differently, mambas toward a fast, slender, alert, often arboreal lifestyle, and cobras toward a stouter body and the rearing, hooding threat display. The king cobra, confusingly, is not a true cobra either but another separate elapid that grew large and eats other snakes.
Which is more dangerous, a mamba or a cobra?
Both are among the most dangerous snakes in Africa, and the honest answer is that it depends on the species and the circumstances. The black mamba delivers a large dose of very fast-acting venom and has a fearsome record, though modern antivenom and ventilation have made survival the norm for people who reach a hospital. Cobras cause a large share of Africa's and Asia's snakebite deaths simply because several species are common around farms and villages and are quick to bite, and the spitting cobras add the risk of eye injury and blindness. In terms of raw venom speed the black mamba is worse; in terms of total human harm, cobras, because of how often they meet people.
Can you tell a mamba from a cobra by looks alone?
Often yes, with care. A mamba is noticeably slim and long for its length, with a narrow, slightly squared-off head, large eyes, and a smooth, uniform grey, olive, or green colour, and it moves fast and fluidly, frequently with its head held well off the ground. A cobra is thicker-bodied, and when alarmed it does something no mamba can, lifting the front third of its body and spreading a distinct hood by fanning its neck ribs. At rest an unhooded cobra is harder to distinguish, but the build, the head shape, and the behaviour when disturbed usually settle it. As always, no one should rely on identification to approach or handle a snake.