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Distribution of the Northern Leopard Frog in Ohio.
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An adult Northern Leopard Frog.
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Species Description: Adult
Northern Leopard Frogs attain a snout-vent length of 5 to 9 cm (2 to 3 1/2
inches). The background color may be green, brown, or tan. The belly
is always immaculate white. The dorsolateral folds extend from behind the
eye to the groin. Along the back two or three rows of randomly placed,
round or oval, black spots with light borders are present between the
dorsolateral folds. Similar spots are found along the sides and on the
snout. A light line can be seen above the upper jaw. Males have
paired vocal sacs.
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Habitat: Northern Leopard Frogs inhabit wet meadows and vegetated stream and lake margins. They are also found in agricultural areas.
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Reproductive Activity: Breeding
begins in mid March or early April and lasts into May. The call is a long,
groaning snore interspersed with clucks and chuckles. It is often compared
to the sound made by rubbing two inflated balloons together.
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Ohio Distribution: Walker
(1946) described the distribution of this species as being state wide but
restricted to river valleys in the unglaciated regions. Today it can be
found throughout the state with the notable exception of southeast Ohio.
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Status: Walker (1946) described the Northern Leopard Frog as being one of the most abundant frogs in Ohio. Today it is still locally abundant but it does appear to be declining where wetlands have been drained. The range appears to be contracting in the southeastern counties where extensive field efforts have yielded few recent records.
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Photographic Recommendations: Positive
identification requires that photographs clearly show the shape of the spots
between the dorsolateral folds and those on the snout
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