- Stiff lizard with large, platelike scales.
Strong tail, somewhat prehensile.
Small, weak legs.
Yellow eyes with closable eyelids.
External ear openings visible.
- Varies from ruddy yellow to reddish brown with dark cross-hatches on dorsal surface.
Head and legs lighter and unmarked.
Pale grey ventral surface.
Adult Gerrhonotus infernalis can reach a total length of 25-50 cm (10-20 in).
In North America, Gerrhonotus infernalis has a broad range in a band from the Edwards Plateau region of Texas west and south through Central Mexico.
Gerrhonotus infernalis is a diurnal lizard with slow and calculated movements. Gerrhonotus infernalis feeds on insects, spiders, and small vertebrates. When threatened, it may inflate itself in defense.
Breeding and reproduction occur throughout the year in Gerrhonotus infernalis. Female egg brooding is exhibited.
Gerrhonotus infernalis can be found on rocky hillsides and wooded canyons.
The Texas alligator lizard is not a protected species in Texas and can be legally collected with a hunting license.
In Texas, Gerrhonotus infernalis is found in a band from Central Texas to the Big Bend area.