Saw-scaled vipers (genus Echis) are a group of small venomous snakes found across parts of Africa, the Middle East, and South Asia.
Small size, big medical impact
Saw-scaled vipers rarely exceed a meter in length, but their combination of wide range, tendency to live close to human settlements, and defensive temperament makes them medically significant across large parts of their range — likely responsible for more snakebite cases than many much larger, more famous species.
A warning sound made from scales, not a rattle
Rather than a rattle, a threatened saw-scaled viper coils its body into tight loops and rubs specialized, saw-edged scales along its sides against each other. This produces a distinctive rasping, sizzling sound — an entirely different mechanism from a rattlesnake's rattle, but serving the same warning purpose.
Range: Africa, the Middle East, and South Asia · Length: Usually less than 1 m · Diet: Small mammals, reptiles, amphibians, and arthropods · Venom: Primarily hemotoxic · Habitat: Arid and semi-arid scrubland, often near human settlement