The snout-to-vent length of a beaded lizard averages . A rare Guatemalan beaded lizard hatched at Zoo Atlanta in March 2012. The beaded lizard is surrounded by myth and superstition in much of its native range. The "Gila Monster" in the movie is actually a Mexican Beaded Lizard. The Mexican beaded lizard "H. horridum" is found in Mexico, from Sonora to Oaxaca.