Sahara Sand Viper
Cerastes cerastes
A small, sand-colored desert viper often bearing distinctive hornlike scales above each eye, famous for its sideways "sidewinding" locomotion across loose dunes.
- Venomous?
- Venomous
- Adult length
- 0.4-0.6 m (1.3-2 ft)
- Range
- Sahara Desert, North Africa and parts of the Middle East
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Overview
The Sahara sand viper is a compact, cryptically colored viper adapted to life on shifting desert sand. It is one of the most recognizable desert-dwelling snakes in North Africa due to its supraocular "horns" and habit of burying itself with only its eyes exposed.
It belongs to the viper family and is venomous; bites are of medical significance in humans, though the species avoids confrontation and relies on camouflage rather than aggression.
How to identify it
- Pale sandy, buff, or grayish coloration with faint darker blotches for camouflage
- Many individuals (but not all) have a single raised, hornlike scale above each eye
- Stout, flattened body with rough, keeled scales
- Broad, triangular head distinct from a narrow neck
- Vertically elliptical (slit-like) pupils
- Adults typically 40-60 cm long
Distinguished from other horned desert vipers by range and finer scale details; lookalikes include the lesser-known Avicenna viper.
Habitat & range
Inhabits sandy and gravelly deserts, dune fields, and semi-arid scrubland across the Sahara and adjacent regions including Algeria, Egypt, Libya, Morocco, and parts of the Arabian Peninsula. Often found at low elevations, sheltering under sand, in rodent burrows, or beneath sparse vegetation during the day.
Behavior, diet & reproduction
Primarily nocturnal and crepuscular, becoming active after dark when desert temperatures drop. Moves using a sidewinding gait that minimizes contact with hot sand. Feeds on small rodents, lizards, and occasionally birds, often ambushing prey while partially buried. Reproduction is oviparous, with females laying small clutches of around 5-20 eggs.
Frequently asked questions
Is the Sahara sand viper venomous?
Yes, it is a venomous viper, though it is generally reluctant to bite and prefers to remain hidden.
Why does it have horns?
Some populations have small hornlike scales above the eyes, thought to help shield the eyes from sand; not all individuals have them.
How does it move across sand?
It uses a sidewinding motion, throwing loops of its body sideways to travel efficiently over loose sand.
Where does the Sahara sand viper live?
It is found across the Sahara Desert region of North Africa and into parts of the Middle East.
Sahara Sand Viper guides
In-depth guides for identifying and understanding Sahara Sand Viper.
