Northern Leopard Frogs, Northern Leopard Frog Pictures, Northern Leopard Frog Facts

Named for the spots across their green backs, northern leopard frogs will eat just about anything that crosses their paths.

Photograph by Bates Littlehales

Map

Northern Leopard Frog Range

Audio

Fast Facts

Type:: Amphibian
Diet:: Carnivore
Average life span in the wild:: 2 to 4 years
Size:: 3 to 5 in (7.6 to 12.7 cm)
Group name:: Army
Protection status:: Threatened
Did you know?: A genetic mutation gives rise to the Burnsi leopard frogs, which have no spots.
Size relative to a tea cup:

The northern leopard frog is perhaps most recognizable as the formaldehyde-soaked specimen in the high school lab tray.

Once the most abundant and widespread frog species in North America, leopard frogs were widely collected not only for dissection but for the food industry (frog legs) as well.

However, massive declines beginning in the early 1970s, particularly in Canada and the western United States, have significantly reduced their numbers. Scientists have not determined the cause of the declines, but it is likely a combination of ecological factors: pollution, deforestation, and water acidity.

Northern leopard frogs are so named for the array of irregularly shaped dark spots that adorn their backs and legs. They are greenish-brown in color with a pearly white underside and light-colored ridges on either side of their backs. They are considered medium-size, reaching lengths of 3 to 5 inches (7.6 to 12.7 centimeters), nose to rump. Females are slightly larger than males.

Their range is most of northern North America, except on the Pacific Coast. They generally live near ponds and marshes, but will often venture into well-covered grasslands as well, earning them their other common name, the meadow frog.

Leopard frogs will eat just about anything they can fit in their mouths. They sit still and wait for prey to happen by, then pounce with their powerful legs. They eat beetles, ants, flies, worms, smaller frogs, including their own species, and even birds, and garter snakes.

More Frogs and Toads

Please select a test to run

Amphibian Features

Poison Dart Frog Pictures

Want to see more of these incredibly colorful critters? Hop on in.
Warty Newt

Meet the endangered newt that’s Europe’s largest. Learn why these amphibians are special—warts and all.
Spotted Salamander

Go underground and meet this salamander that's both large and common, yet so secretive it’s rarely seen.

Please select a test to run

On Nat Geo WILD

TV Schedule »

Animal News

Animals

Animal News

Special Ad Section

From the Magazine

Gannets Pictures

Champion divers but clumsy landers, doting parents but hostile neighbors—northern gannets abound in contradictions.
Estonia's Ural Owls

Photographer Sven Začek provides an intimate view of this large raptor.