Northern Leopard Frog
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Online Guide to the Amphibians and Reptiles of Connecticut

Northern Leopard Frog - Rana pipiens


A member of the true-frog family, this frog reaches an adult size of 3 to 4 inches (7.6 to 10 cm). As the name implies, it has dark spots on the dorsal surface. The irregularly shaped spots are usually brown or brownish green on a background color of green or silvery green. A well-defined dorsolateral ridge extends from the tympanum to the pelvis, and is often lighter in color than the background color. Belly and groin color is white or cream.



Spawns in flooded meadow habitat and grassy vernal pools, where egg masses are laid attached to submerged vegetation.






Wet grasslands with streams or ponds.



Primarily eats insects, but other invertebrates are also taken. As with all frogs, anything small enough can be considered prey, including other frogs.



Known from a few scattered populations in Connecticut, mostly along the Connecticut River and in northern Litchfield County.



Declining throughout its range. In Connecticut it is a species of concern. The taking and possession of this species is regulated in the state.



Conant, R. and J.T. Collins. 1991. A Field Guide to Reptiles and Amphibians: Eastern/Central North America. Boston: Houghton Mifflin. 450 pp.

Klemens, M.W. 1993. Amphibians and Reptiles of Connecticut and Adjacent Regions. Hartford, CT: State Geological and Natural History Survey of Connecticut Bulletin 112. 318 pp.



Text by Gregory J. Watkins-Colwell.
Photographs © Twan Leenders. All rights reserved. Used by permission.
Animals featured in photographs on this page are from Connecticut.

Audio files from The Calls of Frogs and Toads [book and CD-ROM]
Published March 2004 by Stackpole Books; 1.800.732.3669.
© 1994 Lang Elliott/NatureSound Studio
All rights reserved. Used by permission.