"Texas Horned Lizard" This Texas horned lizard (Phrynosoma cornutum) is one of 14 North American species of spike covered lizards. This one is a Texas Panhandle region subspecies, which is the most abundant of those found in the southwestern United States. Although their populations have declined dramatically in 30% of their range, they are now a protected species and the official state reptile of Texas. They grow to a little over 3" in length and their diet is mostly harvester ants and other small insects. They might look fierce, but are quite docile and won't bite.