Horned lizards are a genus (Phrynosoma) of lizards which are the type genus of the family Phrynosomatidae. The horned lizard has been affectionately called a "horny toad", or "horned frog", though they are not moist-skinned toads or frogs. The common names come from the lizard's flattened, rounded body and blunt snout, which make it resemble a toad or frog (Phrynosoma means "toad-bodied"), as well as its tendency, in common with larger true frogs and toads, to move sluggishly, making them easy to hand-catch (such slow, undramatic movements may also avoid triggering attacks by predators, discussed later in this article). The spines on its back and sides are made from modified reptile scales, whereas the horns on the heads are true horns (i.e. they have a bony core). Of 15 species of horned