The Egyptian saw-scaled viper (Echis pyramidum) is a small but highly dangerous desert viper, and knowing how to identify it is the first step to staying safe around it. It was first described from Egypt, and saw-scaled vipers as a group cause some of the most snakebite cases and deaths in the world. This guide explains how to recognise it, what its warning sound means, what its venom does, what to do after a bite, and what a licensed keeper needs before keeping one.
Egyptian Saw-scaled Viper Quick Facts
- Scientific name: Echis pyramidum (Geoffroy Saint-Hilaire, 1827); type locality Egypt
- Other names: North-East African carpet viper, Egyptian carpet viper, Geoffroy’s carpet viper
- Range: northern Egypt (absent from southern Egypt), Sudan, Eritrea, Ethiopia, Djibouti, Somalia and northern Kenya, south-west Arabia (Saudi Arabia, Yemen, Oman), with scattered records in Libya, Tunisia and Algeria
- Size: usually 30–60 cm, up to about 85 cm
- Activity: mainly at night; most bites happen after dark
- Reproduction: lays eggs
- Conservation: IUCN Least Concern
How to Identify a Saw-scaled Viper
The name comes from the scales on the lower flanks: they stand out at about a 45° angle and each carries a keel with tiny teeth, like a hacksaw blade. Other useful signs are a short, wide, pear-shaped head clearly wider than the neck, and a small body. Colours vary, but the pattern is cryptic and blends into sand and gravel, so the snake is easy to miss until it moves. Authorities recognise two or three subspecies; the Egyptian population belongs to the nominate form, E. p. pyramidum.
Saw-scaled viper or horned viper? Both are small Egyptian desert vipers that make a rasping sound. The Saharan horned viper often (not always) has a horn-like scale above each eye and buries itself in fine sand by day. The saw-scaled viper has no horns; look for the saw-edged side scales and the pear-shaped head. If you are not sure, treat the snake as dangerous and keep your distance.
The Warning Sound (Stridulation)
When disturbed, a saw-scaled viper forms a series of parallel, C-shaped coils and rubs its side scales together. This is called stridulation, and the result is a sizzling hiss often compared to violently boiling water. It is a clear warning: these vipers are very easy to provoke and may strike quickly, sometimes overbalancing and moving towards the threat. They are also good sidewinders on sand. Never try to catch one by hand.
Venom: Why It Is So Dangerous
Saw-scaled viper venom mainly attacks the blood and tissues. It can stop the blood from clotting for days or even weeks, so bleeding may start anywhere in the body; bleeding inside the skull can appear a few days after the bite. Bites can also cause local tissue damage and kidney failure. Antivenom is the only specific treatment: in Egypt, VACSERA produces a polyvalent anti-viper antivenom, and SAIMR Echis antivenom is made in South Africa.
Snakebite First Aid (Do and Don’t)
- Go to hospital at once, even if there are no symptoms yet: antivenom may be needed.
- Keep calm, sit or lie down, and keep the bitten limb still in a comfortable position.
- Remove rings and watches before swelling starts; wash the bite and cover it with a clean, dry dressing.
- Mark the edge of the swelling on the skin and write down the time.
- Do not cut the wound, suck out venom, apply a tourniquet, ice or electric shock.
- Do not drink alcohol or take aspirin or ibuprofen-type painkillers.
- Do not try to catch or kill the snake; a photo from a safe distance is enough.
Keeping One Legally and Safely
Echis pyramidum is only for experienced keepers who hold the licence their country requires for dangerous venomous snakes; some countries ban private keeping altogether. Before you buy, confirm your local law, confirm a nearby hospital can obtain a suitable antivenom, and write a bite plan with emergency numbers.
- A lockable venomous enclosure inside a locked room, with secure hides so the snake can be shut away before maintenance.
- A dry desert setup with a warm end and a cooler end, run by a thermostat, and a shallow water dish; our desert terrarium guide and horned viper guide explain a tested layout.
- Hooks, tongs and a lock box; never free-handle, never work alone.
- Feed dead prey from long tongs. In the wild, saw-scaled vipers eat a wide range of food: insects, scorpions, centipedes, frogs and toads, lizards and other snakes, small mammals and birds.
Licensed and experienced? See our captive-bred Egyptian saw-scaled viper (Echis pyramidum), the Saharan horned viper, the Egyptian cobra and all snakes, or read venomous vs non-venomous snakes in Egypt and our shipping policy. Message us on WhatsApp first so we can check your country allows the import.
Sources: Wikipedia, “Echis pyramidum” and “Echis”; The Reptile Database, Echis pyramidum; J. L. Cloudsley-Thompson, “The saw-scaled viper (Echis carinatus)”, The Herpetological Bulletin 24, 1988; Mike Perry, African Reptiles & Venom, “Saw-scaled or carpet vipers”; CDC/NIOSH, “Venomous snakes” first-aid advice; WHO, “Snakebite envenoming” fact sheet.
