Mexican Beaded Lizard
Heloderma horridum
Conservation Status
Least ConcernReptilia · Helodermatidae
About
The Mexican beaded lizard or beaded lizard is a species of venomous lizard in the family Helodermatidae, one of the two species of venomous beaded lizards found principally in Mexico and southern Guatemala. It and the other members of the same genus, including the Gila monster, are the only lizards known to have evolved an overt venom delivery system. The Mexican beaded lizard is larger than the Gila monster, with duller coloration, black with yellowish bands. As it is a specialized predator that feeds primarily upon eggs, the primary use of its venom is still a source of debate among scientists. This venom has been found to contain several enzymes useful for manufacturing drugs in the treatment of diabetes, and research on the pharmacological use of its venom is ongoing.
Fun Fact
The Mexican beaded lizard was feared as a 'living death' by indigenous peoples — its bite is venomous, and a compound in its saliva is now used to treat Type 2 diabetes.
Quick Facts
Habitat
Found in pine-oak forests, with elevations from sea level to 1500 m.
Diet
Diet of small vertebrates such as mice and rats.
Lifespan
2–3 years
Threats
- Habitat Change
- Human Disturbance