Mexican beaded lizard generic name "Heloderma" means "studded skin", from the Ancient Greek words "hêlos" (ἧλος)—the head of a nail or stud—and "dérma" (δέρμα), meaning skin. Its specific name, "horrĭdum", is the Latin word meaning rough or rude. The four subspecies of beaded lizard, elevated to full species in 2013, are: Adult beaded lizards range from in length. They are substantially larger than the Gila monster, which only reaches lengths of . The snout-to-vent length of a beaded lizard averages . The average body mass of an adult beaded lizard is , about 45% heavier than the average mass of a gila monster,
Philippine sailfin lizard sailfin lizards were commonly available in the United States during the 1990s, but today they are now rare and expensive in the United States (costing about $650 for a captive bred juvenile). Breeding in captivity has only been done in a few cases. But because it is common in many parts of the Philippines, the pet trade in many regions still continues and some are even unrecognized by the government. Philippine sailfin lizard The Philippine sailfin lizard, crested lizard, sail-fin lizard, sailfin water lizard, soa-soa water lizard (Hydrosaurus pustulatus) or its native name "ibid" is an oviparous lizard living only