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Beaded Lizard Video Stock Footage

Adult beaded lizards range from 57 to 91 cm (22 to 36 in) in length. They are substantially larger than the Gila monster, which only reaches lengths of 30 to 56 cm (12 to 22 in). The snout-to-vent length of a beaded lizard averages 33 to 48 cm (13 to 19 in). The average body mass of an adult beaded lizard is 800 g (1.8 lb), about 45% heavier than the average mass of a gila monster, with large specimens exceeding 2,000 g (4.4 lb). Maximum weight known is 4,000 g (8.8 lb) Although males are slightly larger than females, the lizards are not sexually dimorphic. Both males and females are stocky with broad heads, although the males' tend to be broader. The beaded lizard's scales are small, beadlike, and not overlapping. Except for the lizard's underside, the majority of its scales are underlaid with bony osteoderms. Their base color is black and marked with varying amounts of yellow spots or bands, with the exception of H. alvarezi, which tends to be all black in color. The beaded lizard has a short tail which is used to store fat so it can survive during months of estivation. Unlike many other lizards, this tail does not autotomize and cannot grow back if broken. The beaded lizard has a forked, pink tongue which it uses to smell, with the help of a Jacobson's organ it sticks its tongue out to gather scents and touches it to the opening of the organ when the tongue is retracted.

Learn more about Beaded Lizard

Animalia: Chordata: Squamata: Reptilia: Helodermatidae: Heloderma horridum

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