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	Leopard frog - Wikipedia, the free encyclopedia
		Leopard frogs, which are also called meadow frogs and grass frogs, are a collection of so-called true frogs within the genus Rana.
		Leopard frogs are often used as environmental indicator species because of their heightened sensitivity to chemical pollutants found in the air and water and are commonly used as dissection specimens in biology classrooms.
		Leopard frogs are recognized by their green or brown coloration with distinct light-edged dark spots across the back and pure white underside.
	en.wikipedia.org /wiki/Northern_Leopard_Frog (267 words)

	Northern Leopard Frog
		Description: The leopard frog is a slender, medium-sized frog; females range from 5.4 to 9.5 cm (2.1-3.7") snout-vent length, and males range from 5.2 to 8.2 cm (2-3.2").
		The pickerel frog, in contrast, has 2 parallel rows of evenly spaced, squarish spots and is colored a bright yellow-orange on the under surfaces of the hind legs.
		Leopard frog spots have light borders on a background of green and/or brown shades.
	www.umaine.edu /wetlands/FGleopard.htm (430 words)

	AllRefer.com - frog (Vertebrate Zoology) - Encyclopedia
		Frogs have no outer ears; their prominent eardrums are exposed on the sides of the head.
		Frogs capture insects and worms with their sticky, forked tongue, attached at the front of the lower jaw.
		Frogs are classified in the phylum Chordata, subphylum Vertebrata, class Amphibia.
	reference.allrefer.com /encyclopedia/F/frog.html (535 words)

	The Leopard Frogs
		During the nineteenth century, scientists grouped most green frogs with brown spots and yellow dorsolateral folds or ridges (lengthwise ridges of skin along the sides of the back) as leopard frogs.
		Leopard frogs are found in nearly every state in the U.S. Leopard frogs can be found in almost any habitat where land and permanent water meet.
		Leopard frogs will spend much of their time hidden in and foraging through the damp undergrowth of temperate forests.
	www.anapsid.org /leopardfrog.html (863 words)

	Leopard Frog
		Leopard frogs are the familiar frogs used in biological studies and are considered true frogs.
		Like all true frogs, leopard frogs have smooth, moist skin and a ridge on each side of the body that runs from the eye to the hind legs, separating the back from the sides.
		Leopard frogs are easily mistaken for pickerel frogs, which are similar in appearance but have rectangular or square spots.
	www.wildlifedepartment.com /leopardfrog.htm (546 words)

	Northern Leopard Frog
		Northern leopard frogs are easily recognized by their slim bodies and leopard-like round, dark spots outlined with pale yellow and white.
		Northern leopard frog tadpoles and froglets are herbivores, feeding mostly on algae and other aquatic plants which they scrape off submerged rocks and twigs with a rasping mouth.
		Northern leopard frogs are one of the first amphibians to emerge from hibernation in the spring and they are the first prolonged breeder to start calling.
	www.northern.edu /natsource/AMPHIB1/Northe1.htm (1174 words)

	Northern Leopard Frog, Rana pipiens
		Brown specimens of the leopard frog differ from pickerel frogs by having round spots scattered randomly about the about the back, and a greenish wash on the thighs.
		One variant of the northern leopard frog is found in Iowa; the Burnsi form is found from time to time about the state.
		Leopard frogs move considerable distances from water, especially in wet grasslands or damp woodlands.
	herpnet.net /Iowa-Herpetology/amphibians/frogs_toads/N.leopardFrog.html (435 words)

	Southern Leopard Frog Page (Site not responding. Last check: 2007-10-20)
		The southern leopard frog, Rana utricularia, is part of the leopard frog complex that was once thought to be a series of geographic races rather than distinct species of similar looking frogs.
		The southern leopard frog occurs in abundance in all of the western part of the state, but sparingly in the knobs or the southern bluegrass.
		Ranging in length from 3 to 5 inches, this frog can be distinguished from the northern leopard frog by its light spot in the center of its tympanum, its longer pointed head, and only a few dark spots on the side of the body.
	bioweb.wku.edu /froglogger/sleopa~1.htm (192 words)

	An Introduction to the Natural History of the Frogs and Toads of Ohio: Northern leopard frog
		Leopard frogs have round to elliptical, light-edged blotches randomly arranged between the dorsolateral folds.
		As a rule of thumb, a blotched frog along a heavily wooded stream or around a woodland pond in northeastern Ohio is probably a pickerel frog, whereas one observed in a field away from a stream or pond is probably a leopard frog.
		Leopard frogs hibernate on the substrate of ponds (but not buried in mud) and are active from mid-March through late October in Ohio.
	www.cmnh.org /collections/vertzoo/frogs/pipiens.html (516 words)

	Leopard Frog (Site not responding. Last check: 2007-10-20)
		Leopard Frogs breed in temporary and permanent ponds, marshes, lakes, and streams.
		The tadpoles of Leopard Frogs are rather large, up to 84 mm., with a lighter tail than the rest of the body.
		Leopard Frogs overwinter in the mud at the bottom of lakes and ponds.
	www.ucc.uconn.edu /~wwwmnh/lpfrog.htm (313 words)

	Arizona Leopard Frogs: Balanced on the Brink?
		Population studies of the Tarahumara frog in the mid-1970's indicated that the future existence of populations of this species in Southeast Arizona and the northern Sonora could be in jeopardy (Hale and May 1983; Hale and Jarchow 1988; Hale 1992).
		Although this seminal investigation concluded that all species of leopard frogs examined were declining, several points relevant to status determination and conservation planning were not addressed by the authors.
		Most of the range of the plains leopard frog occurs in the central and southern Great Plains, where it is an inhabitant of aquatic habitats in prairie and desert grassland ecosystems (Stebbins 1985).
	biology.usgs.gov /s+t/SNT/noframe/sw158.htm (1547 words)

	Leopard Frog
		Northern Leopard Frogs are brown to green frogs with three rows of irregularly arranged fl spots located on the dorsal surface.
		Northern Leopard Frogs range from southern Labrador south to Pennsylvania and Kentucky, and west into the Pacific states (Green and Pauley, 1987).
		Northern Leopard Frogs are commonly known as grass frogs, because they spend considerable amounts of time out of water foraging in meadows.
	www.marshall.edu /herp/Toads_Frogs/Leopard_Frog.htm (527 words)

	Rana pipiens
		Ventrally, Northern Leopard Frog tadpoles are translucent with the intestines readily visible.
		Northern Leopard Frog eggs are small (1.5mm or 1/25 in.) in diameter and are laid in flattened spherical clusters.
		Northern Leopard Frogs are generally associated with heavily vegetated marshes, ponds, streams etc. Likewise, they seem to breed in areas that are also heavily vegetated.
	imnh.isu.edu /digitalatlas/bio/amph/anurans/rapi/Rapi.htm (470 words)

	Southern Leopard Frog Rana sphenocephala (Site not responding. Last check: 2007-10-20)
		Southern leopard frogs are green or brown on top with a few round fl spots scattered randomly about the back and on the sides, but none on the snout.
		The southern leopard frog is found only in the extreme southeastern corner of Iowa.
		The southern leopard frog is found in all water types.
	herpnet.net /Iowa-Herpetology/amphibians/frogs_toads/S.leopardfrog.html (346 words)

	CGEE: Mn Frogs and Toads
		The green frog is found over the eastern half of the state in rivers, streams, lakes, ponds, and wetlands with permanent water and emergent vegetation.
		The spring peeper is confined to the woodlands of eastern and northwestern Minnesota.
		The gray tree frog is found in woodlands all over Minnesota except in the southwestern corner, while the cope's gray tree frog inhabits prairie edges and oak savannas in the central third of the state.
	cgee.hamline.edu /frogs/science/mnfrogs.html (1440 words)

	Leopard Frog/Toad (Site not responding. Last check: 2007-10-20)
		The Leopard Frog and the Pickerel Frog can be distinguished by the arrangement of their spots.
		The spots of the Pickerel Frog are almost square in pattern, while the Leopard Frog's spots are very irregular in shape and pattern.
		The Pickerel frog's beautiful squarish dark markings on its tannish back it looks very similar (though possibly somewhat more handsome) to most leopard frogs, with the one crucial difference being that they have somewhat toxic skin, and should therefore be housed alone as they can poison other frogs.
	allaboutfrogs.org /info/species/leopard.html (451 words)

	Vermont State Amphibian Northern Leopard Frog Rana pipiens
		"A healthy northern leopard frog population is desirable in Vermont, and is threatened by loss of habitat and deformities that may be related to changes in the environment.
		Northern Leopard Frogs may occasionally eat voles and birds and researchers have found garter snakes in the stomachs of large frogs.
		While Northern Leopard Frogs are widely spread, they are suffering from maladies as mentioned above and their numbers are declining, for various reasons, across the country.
	www.netstate.com /states/symb/amphibians/vt_northern_leopard_frog.htm (803 words)

	Northern Leopard Frog Page (Site not responding. Last check: 2007-10-20)
		Occuring only in the bluegrass region of the state is the northern leopard frog, Rana pipiens.
		This frog can be distinguished from its cousin, the southern leopard frog, by the spot located on the tip of the northern leopard frogs' nose.
		This species is sometimes referred to as a "meadow frog" because of its habit of ranging far from water in the summer.
	bioweb.wku.edu /froglogger/nleopa~1.htm (176 words)

	Earlham -- Biological Diversity -- Northern Leopard Frog (Site not responding. Last check: 2007-10-20)
		As the northern leopard frog is not considered an endangered or threatened species in the United States, there are only a few organizations concerned with their conservation.
		Northern leopard frogs also have glands in their skin that secrete poisons, which are strong enough to help them escape from their predators but are not harmful to humans (Encarta, 2001).
		The female northern leopard frog may use her croak if she is being retained by a male with whom she does not want to mate (Encarta, 2001).
	www.earlham.edu /~sheaal/northernleopardfrog.htm (1582 words)

	Leopard Frog - Frogs - University of Wisconsin Sea Grant
		The Northern Leopard Frog was probably the most abundant frog species in the Great Lakes region before 1970, but since that time many scientists and naturalists have noticed a sharp decline in its population.
		First, the Leopard Frog has been commonly used as fishing bait and in biology classroom laboratories for dissection.
		The Pickerel Frog has squarish spots arranged in two rows down the back and also has bright yellow or bright orange on the groin area and under the hind legs.
	www.seagrant.wisc.edu /frogs/leopard_frog.html (289 words)

	Northern Leopard Frog - April Creature of the Month -- Minnesota Pollution Control Agency (Site not responding. Last check: 2007-10-20)
		The northern Leopard Frog is native to Minnesota and is found all over the state.
		Leopard Frogs need moisture, so they like to live in or near streams, ponds, wetlands, lakes and wet meadows.
		The frogs breed in the spring and the females lay eggs that are encased in a soft jelly sac.
	www.pca.state.mn.us /kids/c-april.html (490 words)

	6/13/2002~CHIRICHUA LEOPARD FROG LISTED AS A THREATENED SPECIES
		The frog, native to the Southwest, is imperiled by nonnative predators, particularly fish, bullfrogs, and crayfish; loss of habitat, and potential natural events such as floods and drought.
		The Chiricahua leopard frog is a medium-to-large sized frog from 2.1 to 5.4 inches in length.
		A fungal disease, chytridiomycosis, linked to the global decline of frogs and toads has been identified in Chiricahua leopard frog populations and is contributing to the decline of the species.
	news.fws.gov /newsreleases/r2/8C4FC46C-06A6-4B4C-B83A338AF33CC130.html (1127 words)

	BISON Species Account 020035 (Site not responding. Last check: 2007-10-20)
		Where crayfishes are abundant, leopard frogs are rare or not present, aqutic snails are eliminated, diversity and abundance of aquatic insects is reduced and aquatic vegetation is severely reduced.
		The decline of leopard frogs in the White Mountains apparently began in the late 1970's and corresponded with the widespread introduction of crayfishes in the region (J.T. Bagnara, pers.comm.) 86.
		The decline of leopard frogs in the White Mountains apparently began in the late 1970's and corresponded with the widespread introduction of crayfishes in the region (J.T. Bagnara, pers.comm.) (Fernandez and Rosen, 1996) 47.
	www.fw.vt.edu /fishex/nmex_main/species/020035.htm (3565 words)

	Beyond Main Street: The Nature Lover's Guide to Minnesota
		The Leopard Frog is often one of the easiest amphibians to spot in Minnesota.
		Leopard Frogs are quite active in the fall, when thousands have been counted crossing back roads that meander past lakes or wetlands.
		Leopard Frogs and other amphibians are endangered by runoff, water pollution, pet predation and habitat destruction.
	www.beyondmainst.org /fauna/leopardfrog.html (415 words)

	Leopard Frog (Site not responding. Last check: 2007-10-20)
		The leopard frog ranges across Canada from Prince Edward Island to southern British Columbia.
		It is primarily a frog of meadows and other grassy areas in the summer.
		In the early spring, it breeds in ponds, marshes, and on quiet edges of rivers, lakes, and streams.
	www.nature.ca /notebooks/english/leopfrog.htm (83 words)

	Frogs for Kids - Minnesota Pollution Control Agency (Site not responding. Last check: 2007-10-20)
		The eyes and nose of a frog are on top of its head so it can breathe and see when most of its body is under the water.
		Frogs usually eat meat (bugs and worms) and swallow their food whole.
		The eggs of the marsupial frog are laid in a brood pouch on the mothers back and the young hatch out in a
	www.pca.state.mn.us /kids/frogsforkids.html (227 words)

	Leopard frog -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-20)
		Leopard frogs, which are also called meadow frogs and grass frogs, are a collection of so-called true frogs within the ((biology) taxonomic group containing one or more species) genus (Type genus of the Ranidae) Rana.
		Some species also have a light marking on the center of their (The membrane in the ear that vibrates to sound) tympanic membrane.
		These eggs will attach to the pond substrate and one month after the eggs are laid, (A larval frog or toad) tadpoles emerge approximately 65-83 mm in length.
	www.absoluteastronomy.com /encyclopedia/l/le/leopard_frog.htm (284 words)

	Southern Leopard Frog (Site not responding. Last check: 2007-10-20)
		The Southern Leopard Frog is quite similar to the Northern Leopard Frog.
		In addition, the Southern Leopard Frog usually has less side markings and the spots are smaller.
		The Southern Leopard Frog ranges from extreme southern New York south along the coast to Florida.
	www.npwrc.usgs.gov /narcam/idguide/ranaut.htm (248 words)

	Northern Leopard Frog (Site not responding. Last check: 2007-10-20)
		Northern Leopard Frogs, also called meadow or grass frogs, are bright grass-green with oval fl spots.
		Leopard Frogs emerge from underwater hibernation in spring.
		Leopard Frogs eat many insects and other invertebrates.
	museum.gov.ns.ca /mnh/nature/frogs/north.htm (183 words)

	Southern Leopard Frog
		The southern leopard frog can be found in a variety of colors and spot patterns.
		The southern leopard frog will sometimes venture far away from its normal wetland habitats in the summer and find shade under grasses or small shrubs.
		Range of the Southern Leopard Frog in the eastern U.S.A. Frogs and Toads of SC and GA
	www.uga.edu /srelherp/anurans/ransph.htm (133 words)

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