Central Plateau Dusky Rattlesnake

Fascinating facts about the Central Plateau Dusky Rattlesnake

• Adult male C. triseriatus commonly grow to a total length greater than 60 cm (24 in), with the maximum recorded total length 68.3 cm (26.9 in).
• This rattlesnake lives high up on Mexico’s volcanic spine, most commonly between 2,700 m and 3,350 m (8,860–10,990 ft) but even ventures into the snow line at 4,572 m (15,000 ft) where green plants still cling – a reminder that venomous reptiles can thrive where most think only hardy alpine flora survive.
• Its diet is a mixed bag of alpine critters: frogs, salamanders, crickets, lizards, and small mammals like the murid rodent Neotomodon alstoni, illustrating how a single predator can link together very different animal groups in a high-elevation ecosystem.
• When it bites, victims report intense pain, swelling, faintness, and cold perspiration.

At a glance

About the Central Plateau Dusky Rattlesnake

Crotalus triseriatus is a sleek, venomous pit viper that inhabits the highlands of Mexico’s Transverse Volcanic Cordillera. Adult males regularly exceed 60 cm (24 in) in total length, with the largest recorded individual reaching 68.3 cm (26.9 in); females are modestly smaller. Its coloration blends into pine-oak, boreal, and coniferous forests as well as the tussock grasslands that carpet the plateau, granting it a near-invisible silhouette among the shadows of towering pines and the rustle of bunchgrass. At the lofty slopes of Volcán Orizaba, the snake pushes the limits of life, venturing into the narrow zone where the snow line dips to about 4,572 m (15,000 ft) and green plants persist just a meter higher. Within this rugged realm, C. triseriatus is an opportunistic predator. Stomach analyses reveal a menu of amphibians, murid rodents such as Neotomodon alstoni, lizards, crickets, salamanders, and other small mammals, illustrating a flexible diet that mirrors the seasonal bounty of its environment. When threatened or hunting, the rattlesnake delivers a potent bite that produces intense pain, swelling, faintness, and cold perspiration.

More reptiles to discover

Browse Feravox