Identifying Your Mystery Frog: Is It a Bullfrog?

Dark Green, Black-Spotted Frogs in Your Pond

If your 2-inch frogs are nearly black with dark green undertones and black spots, and you're in the eastern U.S., they are almost certainly bullfrogs (Lithobates catesbeianus). Bullfrog metamorphs are typically 1.5–2.5 inches at transformation.

Key Identification Points

• Large tympanum (eardrum) – bigger than the eye in males.
• No dorsolateral ridges (the folds running down the back of green frogs).
• Call: deep "jug-o-rum" (males only).

Breeding Considerations

Bullfrogs are prolific and can dominate a small pond, eating native amphibians and fish. If you want a diverse ecosystem, consider relocating them to a larger, appropriate habitat.

Photo Confirmation

Email a clear photo to help@fishpondinfo.com for positive ID, especially if you're outside the eastern U.S.

Enjoy your frogs, but manage their impact responsibly!