Green Frogs (Lithobates clamitans) are common New England natives. Often found at the edges of wetlands (perhaps in the company of American Bullfrogs), Green Frogs typically leap to wet safety when they sense human approach. They have skin folds (called dorsolateral ridges) that extend from behind their eyes, a feature that American Bullfrogs lack. Male calls sound like single notes plucked on a banjo. If you need help getting close to a Green Frog, I recommend consulting a young amphibian-loving child. They seem to know what it takes to sneak up on these aquatic creatures.