Frogs and Toads of Maine
Maine only has one toad species and a few frogs that fall into the tree frog and true frog families.
If you are looking to identify a specific frog and can’t figure it out from the page, you can check my Frog Identification and see how to contact me about helping you out.
Tree Frog Family – Hylidae
Spring Peeper (Pseudacris crucifer)
Common Name: Spring Peeper
Scientific Name: Pseudacris crucifer
The Spring Peeper is very small in size compared to the only other tree frog species in Maine, the Gray Tree frog. The distinguishable feature of the Spring Peeper is the x on its back.
Eastern Gray Tree Frog (Hyla veriscolor)
Common Name: Eastern Gray Tree Frog
Scientific Name: Hyla versicolor
Location: Southern half of the state
Breeding Season: After the snow melts to July
The Gray Tree Frog does not posses an x on its back so it can be easily identified if you can tell it apart from the Spring Peeper.
Here is a video of some Eastern Gray Tree Frog males calling that I took
True Frog Family – Ranidae
Northern Leopard Frog (Rana pipiens)
Common Name: Northern Leopard Frog
Scientific Name: Rana pipiens
Location: Everywhere besides the southern parts of the state
Breeding Season: May through June
Common Name: Pickeral Frog
Scientific Name: Rana palustris
Location: Everywhere besides the far north
Northern Leopard Frog and Pickeral Frog look similar to each other but the Northern Leopard Frog has round spots while the Pickeral Frog have more square shaped spots. The Northern Leopard Frog is a special concern species in the state of Maine.
American Bullfrog (Rana catesbeiana)
Common Name: American Bullfrog
Scientific Name: Rana catesbeiana
Breeding Season: Mid June to July
The American Bullfrog is the largest frog in Maine. It can be identified by its lack of dorsal ridge.
Common Name: Wood Frog
Scientific Name: Rana sylvatica
The Wood Frog is easily identified by dark stripes on its face and brownish red color.
Common Name: Mink Frog
Scientific Name: Rana septrentionalis
Location: Throughout the state besides the southeastern coast
The Mink Frog is very similiar to the Green Frog or American Bullfrog but the coloration on it is much different and has more black in it.
Common Name: Green Frog
Scientific Name: Rana clamitans
The Green Frog is often confused with the American Bullfrog but its smaller and it has a dorsal ridge.
True Toad Family – Bufonidae
The True Toads are your typical toad. They usually have a parotid gland behind their eyes that contain a poison called It is not advised to let your dog eat these guys.
American Toad (Anaxyrus americanus)
Common Name: American Toad
Scientific Name: Anaxyrus americanus
Breeding Season: Mid April to Mid May
The American Toad is the only toad species in Maine. They have warts and drier skin than the other frogs of the state.