Mexican beaded lizard Mexican beaded lizard The Mexican beaded lizard ("Heloderma horridum") is a species of lizard in the family Helodermatidae, one of the two species of venomous beaded lizards found principally in Mexico and southern Guatemala. It and its 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 feeds primarily upon eggs, the primary use of its venom is still a source of
Short-tailed horned lizard Mexican states of Puebla and Oaxaca. It may also inhabit Veracruz. Short-tailed horned lizard The short-tailed horned lizard ("Phrynosoma braconnieri" ) is an uncommon species of horned lizard endemic to Mexico. It has a very distinct, shortened tail, which is sometimes not apparent. The specific epithet, "braconnieri", is in honor of French naturalist Séraphin Braconnier. "P. braconnieri" has a very short tail relative to its body length, the shortest of the horned lizards, or indeed of any lizard, thus its common name. "P. braconnieri" inhabits pine-oak woodland and xeric thorn-scrub. It can also be found in corn fields or other