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The Texas horned lizard (Phrynosoma cornutum) has disappeared from almost half of its geographic range. Their popularity in the early to mid-20th-century pet trade, where collectors took thousands from the wild populations to sell to pet distributors, without provision for their highly specialized nutritional needs (primarily formic acid from ...
The Texas horned lizard is the largest-bodied and most widely distributed of the roughly 21 species of horned lizards in the western United States and Mexico. The Texas horned lizard exhibits sexual dimorphism, with the females being larger with a snout-vent length of around 5 in (13 cm), whereas the males reach around 3.7 in (9.4 cm).
The greater short-horned lizard is the most widely distributed horned lizard in North America and occurs in the widest range of habitats: West into central Nevada, east into North and South Dakota, north to southern Saskatchewan and Alberta, [11] and then south into eastern New Mexico to central Mexico, with a few pockets in Trans-Pecos Texas.
Texas horned lizards range from the south-central United States to northern Mexico, throughout much of Texas, Oklahoma, Kansas and New Mexico. They're often found on loose sand or loamy soils and ...
The flat-tailed horned lizard occurs in areas of fine sand, while the short-horned lizard (P. douglasii) is found in shortgrass prairie all the way up into spruce-fir forest. The most common species in the Arizona Upland subdivision is the regal horned lizard ( P. solare ), which frequents rocky or gravelly habitats of arid to semiarid plains ...
The regal horned lizard is a small, flat lizard about the size of the palm of a human's hand. It has spikes all around the lateral surface of its body. It is 3–4 in (117 mm) in length from nose to tail as a full adult, and pale grey to yellow-brown or reddish in color, topped with dark blotches alongside the body and back.
The flat-tail horned lizard is named for United States Army Colonel George A. M'Call, [4] who collected the first specimen in California in the 19th century. The species occupies a small range in the Sonoran Desert of southeastern California, southwestern Arizona, and extreme northern Mexico in the Baja California and Sonora states. [2]
The pygmy short-horned lizard measures roughly 1.25–2.5 in (3.2–6.4 cm) from snout-to-vent (SVL) and is a flat-bodied, squat lizard with short (but not sharp) spikes crowning the head. [5] It has a "snub-nosed" side profile compared to the sleeker snouts of many lizards, and relatively short legs.