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,
Ocellated lizard Ocellated lizard The ocellated lizard, eyed lizard or jeweled lacerta in the pet trade ("Timon lepidus") is a species of wall lizard also known as the (, ). "Timon lepidus" is one of the largest members of its family. The adult is long and may reach up to , weighing more than . About two-thirds of its length is tail. Newly hatched young are long, excluding tail. This is a robust lizard with a serrated collar. The male has a characteristic broad head. It has thick, strong legs, with long, curved claws. The dorsal background colour is usually green, but