Amphibians

American Bullfrog

(Lithobates catesbeiana)
Size: Bullfrogs are the most giant frogs in Philadelphia, reaching 8 inches long.
Habitat: They live in marshes, ponds, and streams.
Description: Bullfrogs are olive-green to brown with darker spots on their backs and legs and large eardrums behind their eyes. Similar to a green frog but without a fold of skin running back from the ear drum. Call a deep "jug-o-rum."

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Northern Green Frog

(Lithobates clamitans)
Size: Green frogs grow up to about 4 1/2 inches long.
Habitat: They live in ponds and slow-moving streams.
Description: Green frogs are all green to bronze in color, with some darker spotting, and have large eardrums. Similar to a bullfrog but with a fold of skin running back from ear drum. The call sounds like loose banjo string.

Pickerel Frog

(Lithobates palustris)
Size: Pickerels are about 3 inches long.
Habitat: They live near rivers, streams, ponds, and wetlands.
Description: Pickerels are bronze-colored with rough squares of dark coloring covering their body. The call is a slow snore.

Eastern American Toad

(Bufo americanus)
Size: They can grow to 8 inches but usually are about 4 1/2 inches.
Habitat: American toads live in many habitats, such as wetlands and forests.
Description: They are stout amphibians with warty skin. They vary in color from tan, brown, gray, olive green, and reddish to black. The call is a high, musical trill.

Northern Two-Lined Salamander

(Eurycea bislineata)
Size: Two-lined salamanders grow to less than 4 inches long.
Habitat: You can find them in or near flowing streams with rocky bottoms.
Description: Two-lined salamanders are a yellowish-brown color. They have two dark lines that run down their back.

Red-Backed Salamander

(Plethodon cinereus)
Size: 2-5 inches long
Habitat: Woods and shaded yards. They spend most of their time undercover, retreating underground in hot weather.
Description: There are two color phases: (1) red-backed, with gray sides and a broad reddish-brown stripe, and (2) lead-backed, which is uniformly gray.