horned lizard


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Related to horned lizard: Desert horned lizard

horned lizard

or

horned toad,

broad, flat-bodied lizards of the genus Phrynosoma, found in arid regions from extreme SW Canada to Guatemala. There are several species in the United States W of the Mississippi. The body is 3 to 5 in. (7.6 to 12.7 cm) long; it has a short, thin tail, a short neck, and short legs. There are spines on the head, sides, and back. Horned lizards are protectively colored, usually in dull grays and browns. They feed on insects, especially ants, and are often found buried in the sand, with only their heads exposed. In some species the female lays eggs; in others the eggs are incubated internally and the young are born alive. When alarmed, members of some species eject a thin stream of blood from the nictitating membrane of the eye for a distance of several feet. Horned lizards are classified in the phylum ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
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, subphylum Vertebrata, class Reptilia, order Squamata, family Iguanidae.
References in periodicals archive ?
One important dietary difference between fringe-toed lizards and flat-tailed horned lizards was that while diet of the flat-tailed horned lizard is almost exclusively harvester ants in all years, during years with higher rainfall, diets of fringe-toed lizards shifted away from harvester ants and focused more on plant material and phytophagous insects including Hemiptera, Coleoptera, and Orthoptera (Barrows, 2006).
Notes on the oecology and life-history of the Texas horned lizard, Phrynosoma cornutum.
The effect of prescribed burning and grazing on the threatened Texas horned lizard (Phrynosoma cornutum) in the western Rio Grande Plains.
The members of the genus Phrynosoma, commonly known as horned lizards, have a wide geographic distribution; they range from Canada to Guatemala and consist of 13 described species, with eight distributed in Canada, the United States, and Mexico.
The Coast Horned Lizard (CHL) is found in California coastal and inland regions from sea level to 8000 feet (2348m), hence from grasslands and Coastal Sage Scrub (CSS) vegetation to pine forest (Jennings, 1988).
Outside, in a wire cage, his two Texas horned lizards were standing in an unusual way.
And they're enlisting the services of the horned lizard to carry their part of the research load.
Under threat, the horned lizard of Arizona's ace is to rupture the capillaries in its eye and shoot a jet of bitter tasting blood at its adversary.
All of the species in South Dakota except the horned lizard will lose their tall to e scape from predators.
Reproduction of the coast horned lizard, Phrynosoma coronatum, in southern California.
The Argentine ant has been blamed for exacerbating problems with some agricultural crops in the state, and for the decline of the coast horned lizard, which feeds exclusively upon the native ant species decimated by the invader.