Desert horned lizard

The desert horned lizard (Phrynosoma platyrhinos) is a distinctive lizard species native to the arid and semi-arid regions of western North America. Often colloquially referred to as "horny toads," these reptiles are easily recognizable by their flattened, broad bodies and the prominent, pointed scales adorning the back of their heads, which give them a horned appearance. Their coloration typically provides excellent camouflage, blending seamlessly with the sandy or rocky soils of their habitat, with variations ranging from beige and tan to reddish hues, often marked with contrasting darker blotches.

Distribution and Habitat

Desert horned lizards are found across a wide geographic range stretching from southern Idaho in the United States down to northern Mexico. They thrive in diverse desert environments, showing a preference for areas with shrub cover and an understory, where they can easily bury themselves in sand or utilize existing burrows. Their range expanded significantly following the end of the Last Glacial Maximum, as desert environments grew more prevalent throughout western North America.

Diet and Behavior

Primarily insectivorous, the desert horned lizard’s diet consists mainly of invertebrates, with ants being a staple food item. They also consume crickets, grasshoppers, beetles, and other small insects, occasionally supplemented with plant material. To cope with the indigestible chitin in ants, they have evolved larger stomachs. Behaviorally, these lizards are generally gentle but possess unique defense mechanisms. They can puff up their bodies when threatened, bury themselves rapidly in sand, and, though rarely, are known to squirt blood from their eyes. They also exhibit interesting behaviors such as rain-harvesting and perform various displays related to social recognition and courtship.