Saw-scaled Viper

The Saw-scaled Viper is the smallest but most aggressive member of India's "Big Four." Despite its small size (averaging 30-60 cm), it is responsible for a disproportionately large number of snakebite incidents due to its irritable temperament, excellent camouflage, and habit of basking on footpaths and roads.

This viper gets its name from the serrated keeled scales on its flanks, which it rubs together to produce a distinctive rasping/sizzling warning sound — a characteristic behavior unique to this genus. When threatened, it coils into a figure-eight position and strikes rapidly and repeatedly.

The saw-scaled viper's hemotoxic venom causes prolonged bleeding, tissue necrosis, and kidney damage. While individual venom yields are small, the frequency of bites makes this species a major medical concern. Found in arid and semi-arid regions, these vipers are most active during the monsoon season when they emerge in large numbers.