- Animals
- ›Chordates
- ›Vertebrates
- ›Reptiles
- ›Snakes and Lizards
- ›Lizards
- ›Glass, alligator, monitor lizards and allies
- ›Beaded Lizards
- ›Heloderma

Beaded Lizard
Heloderma horridum
The Mexican beaded lizard (Heloderma horridum) is the most famous of the four species of venomous beaded lizards found principally in Mexico and southern Guatemala. They and their congener (member of the same genus) the Gila monster (Heloderma suspectum) 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...
Where it lives
Recorded sightings
—
geo-referenced records in GBIF, from museums, herbaria and field observers.
Drag the globe to turn it. Dots are where records exist, not a range map; darker means more records.
In the stacks
Searching the stacks…
Every page naming Heloderma horridum in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 35006.