Zebra-tailed Lizard

The Zebra-tailed Lizard is widely distributed across the southwestern United States and northwestern Mexico. Its range includes regions of Nevada, Arizona, New Mexico, California, Baja California, and extends south to Sinaloa. It can thrive from sea level in desert sinks up to elevations of approximately 1,520 meters (5,000 feet), inhabiting islands in the Gulf of California as well. This species is predominantly found in flatlands, desert scrub, sandy washes, and areas with sparse vegetation that allow for open running space. While commonly associated with firm, sandy soils, it can also adapt to desert pavements and rocky arroyos. The subspecies C. d. crinitus, found in the Vizcaíno Desert, displays specialized adaptations for sandy environments. Zebra-tailed Lizards are highly heat-tolerant and remain active during periods when most other lizards retreat to shelter. They are diurnal and sometimes observed sleeping on the surface during warm nights. When threatened, they display rapid bursts of speed, often running on their hind legs with their tail curled over their back, exposing the stark black and white underside. This tail movement may distract or confuse predators. Territorial behaviors such as head bobbing, push-ups, and body flattening are common in both sexes. They often bury themselves in loose sand for nighttime shelter or to escape predators. An opportunistic feeder, the Zebra-tailed Lizard consumes a wide variety of prey. Its diet primarily consists of insects such as grasshoppers, beetles, caterpillars, and ants, as well as spiders and small lizards. Occasionally, they include plant material or arboreal prey like insects attracted to blossoms. Coastal populations have been observed feeding on amphipods and small crabs. Breeding occurs in the spring, with females laying one or more clutches of eggs from May through August. Each clutch can contain 1–15 eggs, although typical clutch sizes range from 2–8. Eggs incubate for about 30 days, with hatchlings emerging by mid to late summer. Southern populations may produce more clutches annually compared to northern ones. The Zebra-tailed Lizard’s unique escape tactics and tail markings are believed to serve as predator deterrents. By abruptly ceasing tail movements and blending into the sandy background, the lizard may confuse its pursuers. The species is distinguished from similar lizards like the Greater Earless Lizard by its external ear openings and specific body markings, such as forward-positioned side bars. Adaptations like toe fringes in certain subspecies reflect its versatility across varied desert landscapes.