Field Guide to Maryland's Frogs and Toads (Order Anura)

Northern Leopard Frog (Lithobates pipiens)

Northern Leopard Frog, photo courtesy of Stephanie Desranleau
Photo of Northern Leopard Frog courtesy of Stephanie Desranleau
Former Name:

Size:
  • 2 to 4 inches
  • Record: 4 3/8 inches

Appearance:
  • one of three frogs found in Maryland that has distinct spots on the back and 2 back ridges that run from just behind the eye all the way to the tail bone
  • spots are not arranged in definite rows as they are in the Pickerel Frog but insides of the thighs are cream colored (not yellow as they are in the gray Treefrog)
  • similar in appearance to the Southern Leopard Frog except that the Southern Leopard Frog has a white spot on the tympanum, or ear drum; the Northern Leopard Frog has no spot

Habitats:

Photo of  Habitat for Northern Leopard Frog courtesy of Rebecca Chalmers
Photo of Habitat for Northern Leopard Frog
courtesy of Rebecca Chalmers

  • Any freshwater habitat, including lakes, ponds, streams, small wetlands, even backyard pools
  • May move a far distance from water, especially in wet grasslands or woodlands
  • When far from a water source, they will absorb dew from wet grass

How to Find:

Distribution in Maryland:
This species has been introduced to Frederick County.
Maryland Distribution Map for Northern Leopard Frog
For More Information: