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Topic: True Frog

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	Frog
		Frogs have a tympanum on each side of the head, which is involved in hearing and, in some species, is covered by skin.
		Frog populations have declined dramatically since the 1950s, with more than one third of species believed to be threatened with extinction and more than 120 species suspected to have become extinct since the 1980s.
		Frogs are used in cloning research and other branches of embryology because frogs are among the closest living relatives of man to lack egg shells characteristic of most other vertebrates, and therefore facilitate observations of early development.
	www.zoosamara.ru (4511 words)

	paradoxical frog - Search Results - MSN Encarta
		- S American frog: a frog of which the adult is less than a third the size of the tadpole.
		Frog (animal), small, tailless animal with a squat body and long, powerful hind legs adapted for jumping.
		Bullfrog, common name for a frog of the true frog family, named for the males' deep resonant call, which sounds something like a bull's bellow.
	encarta.msn.com /paradoxical_frog.html (135 words)

	AllRefer.com - frog (Vertebrate Zoology) - Encyclopedia
		Frogs have no outer ears; their prominent eardrums are exposed on the sides of the head.
		Frogs have true voice boxes and are noted for their various sounds.
		Frogs capture insects and worms with their sticky, forked tongue, attached at the front of the lower jaw.
	reference.allrefer.com /encyclopedia/F/frog.html (535 words)

	World Almanac for Kids
		Frogs and toads are generally harmless to humans, but some South American frogs, such as the poison dart frogs of the family Dendrobatidae, secrete an especially powerful toxin through the skin that causes severe irritation.
		Frogs and toads are important in controlling insect pests in the woods, farm, and garden; several species have been introduced in various parts of the world for this purpose.
		Frogs and toads are also important to research and medical laboratories because their skeletal, muscular, digestive, nervous, and other systems are similar to those of higher animals.
	www.worldalmanacforkids.com /explore/animals/frog.html (1136 words)

	Columbia Encyclopedia- frog - AOL Research & Learn (Site not responding. Last check: 2007-10-20)
		Frogs have no outer ears; their prominent eardrums are exposed on the sides of the head.
		Frogs have true voice boxes and are noted for their various sounds.
		Frogs capture insects and worms with their sticky, forked tongue, attached at the front of the lower jaw.
	reference.aol.com /columbia/_a/frog/20051206021309990013 (493 words)

	Frog - Search Results - ninemsn Encarta
		Frogs are native to all parts of the world, except Antarctica, but the...
		Bullfrog, common name for a frog of the true frog family, so named because of the male’s deep resonant croak, which sounds something like a bull’s...
		Toad, common name for a group of frog-like amphibians that are usually distinguished from frogs by the roughness of the skin, which has a large...
	au.encarta.msn.com /Frog.html (217 words)

	Frogs and Toads (Site not responding. Last check: 2007-10-20)
		Frogs range in size from 12 mm (0.5 in) to nearly 300 mm (nearly 1 ft) in length.
		The tongue of frogs is attached at the front of the mouth instead of the rear and is covered with a sticky substance, making it an efficient trap for prey.
		Some frogs of the Asian family have webbed fanlike structures of their feet enable them to jump from such heights that they are sometimes known as flying frogs.
	www.mckinneyisd.net /Campuses/school_websites/valleycreek/frogs_and_toads.htm (1001 words)

	Salientia
		Frogs have at most nine vertebrae in front of the sacrum, and the three or four posterior to the sacrum are fused into a rod called the urostyle.
		Frogs also have a radioulna, which represents a fused radius and ulna (bones of the forearm), and a tibiofibula, the fused tibia and fibula (bones of the shank).
		In addition to morphological distinctions, frogs also have a distinctive life phase known as the tadpole, which is a highly specialized "eating machine." Salamanders and caecilians have a larval form, but in neither does the larva possess the many specializations (such as the ceratohyal pump) that frog tadpoles have (Wassersug, 1974).
	www.zo.utexas.edu /research/salientia/salientia.html (2810 words)

	Frog Trade
		Fewer than 50 frogs are needed to keep an acre of a rice paddy field free of insects: they play a vital role in eradicating insect pests, they prevent illnesses, and are a natural biological agent.
		Frogs used for trade are captured by the bucket and slaughtered in the most insanitary and inhumane manner.
		This majority of Indonesian frogs is due to the fact that India and Bangladesh (the primary exporters until 1989) have banned the trade because of damage by pests which frogs used to eat.
	www.american.edu /TED/frogs.htm (1790 words)

	Questions about the Listing of the Southern California Distinct Population Segment of Mountain Yellow-legged Frog as ...
		The mountain yellow-legged frog (Rana muscosa), a member of the family of ‘true frogs', (Ranidae) is a relatively small frog that measures about 1.5 to three inches in length from the snout to the base of the backbone.
		True frogs are carnivorous and feed primarily on insects, spiders, and crustaceans, but they will eat just about anything else that can be caught and swallowed.
		Frogs infected with this disease may be lethargic, and be unable to remain upright; red spots and swollen skin may also develop.
	www.fws.gov /pacific/news/2002/65/qa.htm (1348 words)

	frog. The Columbia Encyclopedia, Sixth Edition. 2001-05
		Among the latter type, those with stout bodies and thick skins are often called toads, although the name toad is sometimes restricted to members of the most terrestrial family of the Anura, the Bufonidae.
		The eggs—up to 20,000 at one time—are fertilized as they are laid in the water and are given buoyancy and protection by a gelatinous covering secreted by the female.
		Frogs are classified in the phylum Chordata, subphylum Vertebrata, class Amphibia.
	www.bartleby.com /65/fr/frog.html (505 words)

	New Page 3
		True frog pressure necessary to develop the inner structures is hard to obtain in these horses.
		Often this is the first true frog pressure they have received in years; their very first chance to heal, in spite of the best farrier care available.
		The frog was yearning for more natural pressure and moved into that pathological position trying to adapt, but pulling the shoes leaves the frog standing too tall and usually receiving more pressure than it can comfortably bear on firm footing.
	www.hoofrehab.com /bootarticle.htm (4486 words)

	J. Frog Forgeries
		Even though ESP paid J. Frog a $250.00 royalty per guitar for the right to do this they are not authenticated because the royalty had to be obtained through legal channels after ESP had already started making them without permission from Johnny Frog.
		The real J Frog guitar has about twice as much definition in the carving, for example the knucklebones are sharp and highly delineated, The teeth are much more accurate.
		Frog insists that all the real ones have to anatomically correct just like the original one he made over 22 years ago for George.
	www.edromanguitars.com /guitar/jfrog/fake_jfr.htm (753 words)

	Fire Frog (Site not responding. Last check: 2007-10-20)
		The sex of an adult fire frog can be easily determined by examining the size of the tympanum (the external ear of the frog) relative to that of the eye.
		Fire frogs also seem highly resistant to toxins and pollutants, though this seems merely to be an adaptation to their environment, as they are still easily killed by high toxin levels.
		Fire frogs are named for their unique ability to project flames from their mouth, which they often use to attack large creatures, which they will then consume over a period of time, leaving unfinished and rotting carcasses behind.
	members.aol.com /wyrship/shadowrun/creatures/fire_frog.html (446 words)

	Frogs and Toads of New York
		Toads are frogs that, due to the nature of their coarse dry skin, are adapted to spend most of their life on land.
		Male green frogs, like those of bullfrogs, have visible eardrums on the side of their heads that are bigger in diameter than their eye.
		Scientists have learned that these frogs, as well as the spring peeper and gray treefrog, can tolerate partial freezing of their body tissues, a condition that is lethal to most animals.
	www.esf.edu /PUBPROG/brochure/frogstoads/frogs.htm (1518 words)

	Wood Frog - Alberta Sustainable Resource Development (Site not responding. Last check: 2007-10-20)
		Sometimes the wood frog is confused with immature spotted or northern leopard frogs.
		The wood frog is currently on the Green List in the Status of Alberta Wildlife and is considered not to be at risk.
		The wood frog is found throughout the aspen parkland and the boreal forest.
	www3.gov.ab.ca /srd/fw/amphib/wf.html (473 words)

	BUGWEB\beneficial
		Frogs are native to all parts of the world, except Antarctica, but the greatest variety are found in tropical areas.
		The African giant frog, the largest of all frogs, which grows as long as 66 cm (26 in) and weighs as much as 4.5 kg (10 lb), is also a true frog.
		Frogs are also important to research and medical laboratories because their skeletal, muscular, digestive, nervous, and other systems are similar to those of higher animals.
	www.geocities.com /hibiscusred/bug/beneficial.htm (986 words)

	"Jurassic frogs"
		They knew the age of the frog because it was embedded in a layer of rock that contained other easily identified fossils from the Jurassic era.
		And while other animals have a pelvis that is fused to the spine, frogs developed a movable joint that allows the pelvis to slide up and down the backbone, a configuration that helps catapult frogs into the air.
		Frogs survived through the age of dinosaurs and hung on through the mass extinction during which dinosaurs perished.
	sln.fi.edu /inquirer/frog.html (876 words)

	Ranidae Family
		The true frog family, Ranidae, is represented by only one genus, Rana in North America.
		Breeding for true frogs typically occurs during the Spring with groups of males calling in females to the breeding areas.
		Breeding males have swollen forelimbs and thumbs that facilitate pectoral amplexus.
	www.fs.fed.us /r4/amphibians/family_ranidae.htm (134 words)

	Shapes & sizes of frogs and toads: Minnesota DNR
		The true frog family includes the largest frog in Minnesota, the bullfrog, which may measure up to 8 inches in length.
		The tympanum of male Cope's gray treefrogs, gray treefrogs, bullfrogs, green frogs, and mink frogs is larger than the eye of the frog.
		Distinguishing between males and females is easiest during the breeding season, when male toads and frogs have a darker throat color and male toads grow pads on their thumbs.
	www.dnr.state.mn.us /reptiles_amphibians/frogs_toads/shapes_sizes.html (187 words)

	"Jurassic frogs"
		They knew the age of the frog because it was embedded in a layer of rock that contained other easily identified fossils from the Jurassic era.
		And while other animals have a pelvis that is fused to the spine, frogs developed a movable joint that allows the pelvis to slide up and down the backbone, a configuration that helps catapult frogs into the air.
		Frogs survived through the age of dinosaurs and hung on through the mass extinction during which dinosaurs perished.
	sln2.fi.edu /inquirer/frog.html (876 words)

	frogs
		The Bull Frog is the largest True Frog in North America.it can weigh up to 1.2 lbs and grow up to 18 inches long.
		Frogs have teeth on their upper jaws but none on their lower.
		As tadpoles mature, the tail is absorbed,lungs develop,the gills disappear,legs appear,and the adult frog form is established.
	www.homestead.com /kidstuff/frogs.html (263 words)

	FrogWatch
		The Red-legged Frog is a large, true frog with clear dorsolateral ridges.
		This species may be distinguished from other frogs by the light stripe on its jaw bordering a dark mask and by its yellow underside with red on the lower abdomen and hind legs.
		The Red-legged Frog is less aquatic than the Spotted Frogs and may be found at the shoreline or foraging on land.
	www.naturewatch.ca /english/frogwatch/species_details.asp?species=19 (402 words)

	Frog-Grinding Towers (Site not responding. Last check: 2007-10-20)
		The reason for this is that the true nature of the frog-grinding structure is largely dependent on its impressivity factor i.
		Indeed, the number of frogs ground by a frog-grinding tower is directly proportional to the square of its height.
		Another possibility is that the shot frogs constitute a communication medium unregulated and unmonitored by people, and therefore private in nature, although this is a highly unlikely possibility.
	www.ugcs.caltech.edu /~diffusor/fgt (1653 words)

	Not Necessarily Calling Frog Surveys (Site not responding. Last check: 2007-10-20)
		Calling surveys for these anurans, which are in the true frog and true toad genera, account for only 26.0% of the total number of reports for these seven species.
		Although the graphs for green frog, wood frog, bullfrog and leopard frogs show peaks during the breeding season when vocal reports outnumber non-vocal reports, this phenomenon is short-lived.
		For the chorus frogs and treefrogs, more than 80% of the blocks defining the species’ distribution were documented using vocal techniques (Figure 6).
	www.dec.state.ny.us /website/dfwmr/wildlife/herp/publications/notfrog.html (825 words)

	San Diego Zoo's Animal Bytes: Frog & Toad
		Frogs have long legs that are good for hopping, skin that is smooth and moist, and special pads on their toes that help them climb.
		Some of these bright little South American frogs are so toxic that one drop of their skin secretions can kill an adult human.
		The loss of wetlands and other frog habitat because of industry and human population growth is one of the biggest causes.
	www.sandiegozoo.org /animalbytes/t-frog_toad.html (1219 words)

	Bronze Frog (Rana clamitans clamitans)
		Rana is the Latin word for "frog." Clamitans, the species and subspecies name, means "noisy" and refers to the call of the male.
		The bronze frog is a member of the true frog family, the Ranidae family.
		Bronze frogs are found in the southeastern portion of the United States, from North Carolina to the eastern third of Texas.
	www.tpwd.state.tx.us /huntwild/wild/species/index.phtml?o=bronzefrog&print=true (476 words)

	Mountain Yellow-Legged Frog
		Mountain yellow-legged frogs from the high Sierra and the mountains of southern California are somewhat similar to each other, yet distinct from the foothill yellow-legged frog, R. boylii.
		The range of the mountain yellow-legged frog is divided by a natural geographic barrier, the Tehachapi Mountains, which isolates Sierran frogs from those in the mountains of southern California.
		Frogs in southern California are typically found in steep gradient streams in the chaparral belt, even though they may range up into small meadow streams at higher elevations.
	tchester.org /sgm/animals/yellow_legged_frog.html (1128 words)

	True Frog Family (Site not responding. Last check: 2007-10-20)
		True frogs are smooth-skinned, long-legged, narrow-waisted frogs with horizontal pupils and extensive webbing on the hind feet.
		Adult true frogs are carnivorous, feeding on insects, spiders, crustaceans, and sometimes other vertebrates, while tadpoles feed on algae, bacteria, diatoms, and detritus.
		Female frogs lay strings or rafts of eggs, sometimes in the tens of thousands.
	www.pwrc.usgs.gov /amphib/primenet/truefrog_family.html (129 words)

	Around the Horned with Brian Estridge :: A tribute to a true Horned Frog
		When Gary Patterson became the head coach of the Frogs in 2001, his first recruiting class was pieced together in a short amount of time.
		Frog fans everywhere were left to think about what might have been.
		Not only would TCU not be Mountain West Conference champions, the Frogs would not be household names in the college football world without Tye Gunn.
	gofrogs.cstv.com /genrel/111305aaa.html (977 words)

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