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Horned lizard - Wikipedia, the free encyclopedia Horned lizards (Phrynosoma) are a genus of the Phrynosomatidae family of lizards. Horned lizards are often wrongly called "horned toads" or "horny toads", but are not toads at all. Horned lizards are morphologically similar to the Australian thorny devil (Moloch horridus), but are only distantly related. en.wikipedia.org /wiki/Horned_lizard   (251 words)

Eastern Short-horned Lizard Limiting Factors Lizard populations in Alberta may be impacted by both natural and human-related influences such as Climate, Agricultural Activities, Oil and Gas Exploration, Urbanization and Roadways and Traffic. Once again, lizards inhabit areas that are not likely subjected to cultivation, but the extent of use of such "marginal" land is dependent upon individual landowners. There may be important local ramifications for Short-horned Lizard populations caused by roads or roadways or the use of motorized vehicles such as dirt bikes, all-terrain vehicles, and even truck traffic over the home range areas of the animals. www.abheritage.ca /abnature/speciesatrisk/lizard_limits.htm   (749 words)

Short-Horned Lizard short-horned lizard, is easily identified by its wide, flat body with the back and rear of its head covered with short spines. The short-horned lizard is listed as rare in South Dakota and, as such, is protected from collection, capture, and disturbance. Reeve, W.L. 1952 Taxonomy and distribution of the horned lizards genus Phrynosoma. www.northern.edu /natsource/ENDANG1/Shorth1.htm   (624 words)

Species at risk - Greater Short-horned Lizard Horned lizards are quite squat with short tails; they have spines on the head and fringe scales at the sides of the abdomen. The Greater Short-horned Lizard is found in the western parts of the Dakotas and Nebraska, and in Montana and the adjacent part of southern Canada, south to eastern Colorado and extreme northeastern Utah. The Short-horned Lizard is found in a variety of non-desert habitats throughout its range, varying from high-altitude open grassland in Mexico to sagebrush steppe, pine forest, and juniper-pinon woodlands in the southwestern U.S., to sagebrush communities and semi-arid short-grass prairie in southern Canada. www.speciesatrisk.gc.ca /search/speciesDetails_e.cfm?SpeciesID=279   (1108 words)

Horned Lizards (Phrynosoma spp.) Horned lizards are found throughout the Sonoran Desert region from near sea level up to 11,300 feet (3440 m). Some species are widespread, such as the round-tailed and Texas horned lizards which occur in several U.S. and Mexican states, while the flat-tailed horned lizard (P. mcalli) is restricted to southwestern Arizona, extreme southeastern California, a small part of northeastern Baja California and the upper neck of northwestern Sonora, Mexico. Horned lizards are no exception to the general rule that lizards are not attracted to dead insects as food—the ants must be alive and moving for the lizard to show interest in them as prey. www.desertmuseum.org /books/horned_lizard.html   (776 words)

Shrub-Steppe Series: What About Lizards?   (Site not responding. Last check: 2007-11-07) All lizards are ectothermic, or cold-blooded, which means their inside body temperature is the same as the temperature of the air outside of their bodies. The side-blotched lizard, generally the smallest of the three local species, is named for the large fl spot found on the sides of its body behind the front legs. The sagebrush lizard has a long blue patch on each side of its belly and is sometimes referred to as the blue-bellied lizard, though the rest of its body is gray or brown. www.pnl.gov /pals/resource_cards/lizards.stm   (884 words)

Horned Lizards This name apparently was given to the lizards both because of their horns and because horned lizards are sacred to many people due to their blood squirting behaviors, otherwise considered weeping tears of blood. Horned lizards are a rather fecund group, and lay or give birth to many offspring compared to other lizards. Horned lizards have evolved a variety of mechanisms to avoid their predators which include loggerhead shrikes, hawks, roadrunners, a variety of snakes, coyotes and foxes. www.lifesci.utexas.edu /faculty/pianka/phryno.html   (1931 words)

Short-horned Lizard   (Site not responding. Last check: 2007-11-07) The taxonomy of the Short-horned Lizard is in the midst of a major revision based on recent research. Short-horned Lizards are flat-bodied, squat lizards with short spines crowning the head. The Short-horned Lizard is the most widely distributed lizard in North America and occurs in the widest range of habitats. www.sciencedaily.com /encyclopedia/short_horned_lizard   (602 words)

LongmontFYI - Reptile radio   (Site not responding. Last check: 2007-11-07) That and the fact that these lizards look like miniature dinosaurs are enough for two wildlife researchers, who are plenty busy with other work, to devote their personal time to tramping around a tract of rangeland late in the evenings and on weekends. Horned lizards use a variety of mechanisms to ward off predators, which include hawks, snakes, coyotes and foxes. Short-horned lizards are not endangered, but they were on the short list this year to be listed as a species of concern in Colorado. www.longmontfyi.com /Local-Story.asp?id=2693   (834 words)

North Dakota Lizards   (Site not responding. Last check: 2007-11-07) Sagebrush lizards and prairie skinks have a unique escape mechanism in that their tail breaks away when grabbed by a predator. Short-horned lizards found in North Dakota are often referred to as horned toads. The horned lizard has a defense mechanism that allows it to squirt blood from the corner of its eyes. www.und.nodak.edu /org/ndwild/lizard.html   (379 words)

SHORT-HORNED LIZARD   (Site not responding. Last check: 2007-11-07) Insufficient data on effect of grazing on lizard density however it is unlikely that overgrazing is responsible for the disappearance of Short-horned Lizards. Short-horned Lizards are live-bearing or viviparous (probably an adaptation to cold climates) and have been known to produce broods as large as 31. Typically, horned lizards are active earlier in the morning and later in the evening than are other lizards and frequently have quite variable body temperatures. rbcm1.rbcm.gov.bc.ca /end_species/species/shliz.html   (1024 words)

Handbook of Texas Online: HORNED LIZARD The Texas horned lizard is the most widely known and the most prevalent in the state, and in 1993 was officially designated the state reptile by the Texas legislature. The Texas horned lizard, commonly called the "horny toad," is typically 2½ to 4 inches long and has a short, pointed snout, a broad, flat body, and a short tail. Originally, protection for the Texas horned lizard was sought because it was being overcollected for the pet and curio trades and for trading by the Boy Scouts at national jamborees. www.tsha.utexas.edu /handbook/online/articles/view/HH/tdhyk.html   (737 words)

Horned Lizards (DesertUSA)   (Site not responding. Last check: 2007-11-07) The Coast Horned Lizard (Phrynosoma coronatum), which is found in coastal and cismontane California, crosses to the east side of the Baja Peninsula, actually making contact with the Desert Horned Lizard in the vicinity of Bahía de Los Angeles. Horned Lizards are neat creatures but hard to keep because most of them are obligate ant eaters and, at that, eat a very limited number of species of ants. Regal Horned Lizard, which gorges itself on tiny beetles and eschews ants altogether when the beetles are abundant. www.desertusa.com /april96/du_hliz.html   (1316 words)

Lizards   (Site not responding. Last check: 2007-11-07) The Collared Lizard has the typical lizard shape (like a miniature dinosaur): big head, long tail, plump body covered with granular scales, and four feet with five clawed toes on each. A few lizards are plant-eaters (the Chuckwalla and Desert Iguana eat leaves and flowers of a desert plant called creosote bush), but most eat insects, spiders, snails, and other reptiles. Horned lizards have special muscles that can burst tiny blood vessels at the edges of the eyes. www.imschools.org /nextday/lizards.htm   (523 words)

Phrynosoma coronatum (blainvillii) - Coast Horned Lizard Horned lizards, like this one, will sometimes bury themselves in loose soil or sand to hide from predators or photographers. When threatened, horned lizards will often spurt blood from a pore near the eyelid to deter the attacker, in this case, a dog. The bare spot in the foreground is a nest of harvester ants, a primary food source for Coast Horned Lizards. www.californiaherps.com /lizards/pages/p.coronatum.html   (239 words)

Articles - Desert horned lizard   (Site not responding. Last check: 2007-11-07) The Desert horned lizard, Phrynosoma platyrhinos, is a horned lizard native to western North America. Desert Horned Lizards have horns that are longer than they are wide at the base, which isn't true for their congener, the Short-horned lizard. Desert horned lizards prey primarily on ants, but are also known to prey on other slow-moving insects such as beetles, as well as spiders and some plant material. www.gaple.com /articles/Horny_toad   (599 words)

Texas Tech University Press - Books - Horned Lizards Horned lizards, or horny toads, as they are popularly known throughout the West, have long had a particular mystique in American folklore. Dried horned lizards were sold in the roadside curio shops along the nation’s major highways. Jane Manaster has written this book for a general audience, but she treats all aspects of the lizards’ biology as well as the horned lizard’s place throughout the culture of the West. www.ttup.ttu.edu /books/HORNEDLIZARDS.html   (278 words)

Greater Short-horned Lizard Detailed Information - Montana Animal Field Guide   (Site not responding. Last check: 2007-11-07) The short-horned lizard is found east of the Continental Divide across the prairies of eastern Montana and in the Gallatin Valley (Maxell at al. The short-horned lizard was considered the most abundant reptile along the Missouri River in Montana in the late 19th Century (Cope 1879), second only to the western rattlesnake, but it is no longer thought common anywhere in the state, with the possible exception of southern Carbon County (Maxell et al. Observations of the Short-horned Lizard in southeastern Alberta. fwp.state.mt.us /fieldguide/detail_aracf12080.aspx   (1457 words)

Horned Lizards The genus is thought to have split from an ancestor shared with the sand lizards (Uma, Callisaurus, Cophosaurus, and Holbrookia) during the late Oligocene-early Miocene (23- 30 mya). Native Mexican people also respect horned lizards attributing the words, "Don't tread on me! I am the color of the earth and I hold the world; therefore walk carefully, that you do not tread on me." A Mexican common name for horned lizards is "torito de la Virgen" or the Virgin's little bull. RCM among horned lizards ranges from 13% to 35%, (offspring constitute from 13-35% of a female's weight). www.zo.utexas.edu /faculty/pianka/phryno.html   (1931 words)

ND Endangered and Threatened Species The eastern short-horned lizard is found in the western counties of the Dakotas to northeastern Montana and adjacent Canada, south to eastern Colorado and extreme northeastern Utah. The species is locally common in the semi-arid short grass plains of the extreme western portion of Nebraska. The eastern short-horned lizard is often called the "horny toad or prairie cookie" in local areas. www.npwrc.usgs.gov /resource/wildlife/nddanger/species/phrydoug.htm   (585 words)

Intel Education: An Innovation Odyssey Story 160 The lizards are common, but their numbers have been in decline in recent years. They also studied the lizards during the winter months to learn about animal hibernation in a man-made habitat. The lizard project has given students many opportunities to use the tools of technology to conduct and disseminate their research. www97.intel.com /odyssey/story.aspx?storyid=160   (798 words)

Phrynosoma Bibliogrphy   (Site not responding. Last check: 2007-11-07) Goldberg, S.R. and Bursey, C.R. (1991): Gastrointestinal helminths of the Mexican horned lizards Phrynosoma braconnieri and Phrynosoma taurus (Iguanidae) - Southwestn. and Whitford, W.G. (1971): Physiological responses to temperature in the horned lizards, Phrynosoma cornutum and Phrynosoma douglassii - Copeia 3: 498-504 Weese, A.O. An experimental study of the reactions of the horned lizard, Phrynosoma modestum Girard, a reptile of the semi-desert - Biol. www.phrynosoma.com /PBiblio.htm   (4007 words)

Texas' State Reptile, the Texas Horned Lizard (Phrynosoma cornutum) [Geobopological Survey]   (Site not responding. Last check: 2007-11-07) But horned lizards were touching Texans’ hearts long before Americans were crying over Old Yeller. The horned lizard is the official mascot of Texas Christian University (TCU) in Fort Worth. The first time a Horned Frog mascot roamed the sidelines was at the beginning of football season in 1949, when there was a six-foot purple-clad frog frog was was, on the inside, James Paschal, undergraduate from Amarillo, now a member of the journalism faculty at the University of Oklahoma. www.geobop.com /world/NA/US/TX/Reptile.htm   (1331 words)

Short-horned lizard Short-horned lizards are relatively flat, round lizards with short, stubby horns above the eyes and around the back of the head. Short-horned lizards vary in color from tan to reddish to brown, with some large dark blotches and sometimes small light and dark flecks. Outside Washington, the short-horned lizard occurs widely throughout the west, except for southern Nevada and most of California, and in parts of northern Mexico. www.washington.edu /burkemuseum/collections/herpetology/phrynosoma.htm   (277 words)

Bryce Canyon National Park: Nature & Geology - Wildlife   (Site not responding. Last check: 2007-11-07) Often called "horned toads," short-horned lizards are not toads, but flat-bodied lizards with short spines crowning the head. Horned lizards deal with predators by camouflaging themselves, hiding, fleeing, or as a last resort, attacking back. Monitoring and acting on recorded observations is crucial to survival of horned lizards. www.nps.gov /brca/shorthorned_lizard.html   (369 words)

Digimorph - Phrynosoma hernandesi (Short horned lizard) hernandesi can be distinguished from other horned lizard species by the following: one row of lateral abdominal fringe scales; reduced occipital spines directed posteriorly, parallel with temporal spines; and dorsal scales arranged in 6-8 longitudinal rows, rosettes absent or poorly developed. The specimen was scanned by Matthew Colbert on 23 May 2003 along the coronal axis for a total of 702 slices, each slice 0.0313 mm thick with an interslice spacing of 0.0313 mm. Reeve, W. Taxonomy and distribution of the horned lizard genus Phrynosoma. www.digimorph.org /specimens/Phrynosoma_hernandesi   (317 words)

horned lizard on Encyclopedia.com   (Site not responding. Last check: 2007-11-07) or horned toad, broad, flat-bodied lizards of the genus Phrynosoma, found in arid regions from extreme SW Canada to Guatemala. Horned lizards are protectively colored, usually in dull grays and browns. Horned lizards are classified in the phylum Chordata, subphylum Vertebrata, class Reptilia, order Squamata, family Iguanidae. www.encyclopedia.com /html/h1/hornedli.asp   (468 words)

Southwest Wildlife Horned Lizard   (Site not responding. Last check: 2007-11-07) By burrowing underground during the heat of the day, horned lizards help reduce water loss through evaporation. There are 13 species of horned lizards, 7 of which occur in the United States. One horned lizard may consume 70-100 ants in one day. www.southwestwildlife.org /factsheets/hlizard.htm   (334 words)

Texas Horned Lizard: WhoZoo There are noticeable spines (modified epidermal scales) on the back of the head, on the center of the head as horns, on each side of the throat, and rows of spines on each side of the body. The Texas Horned Lizard spends most of their heating up their bodies from the sun, eating harvester ants and chasing away predators. Texas horned lizards collect water by "rain harvesting." They raise and flatten their bodies, then lower the head to collect water flowing along channels formed by their scales. www.whozoo.org /AnlifeSS2001/natdavid/NGD_HornedLizard.htm   (566 words)

Utah Division of Wildlife Resources The greater short-horned lizard, Phrynosoma hernandesi, occurs throughout much of the western United States, and into portions of southern Canada and northern Mexico. Although commonly called "horned-toads," greater short-horned lizards are reptiles, not amphibians. Female greater short-horned lizards do not lay eggs, but rather give birth to live young during mid- to late summer. dwrcdc.nr.utah.gov /rsgis2/Search/Display.asp?FlNm=phryhern   (142 words)

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