Frogs and Toads of Ontario, Canada
The American Bullfrog is the largest frog in the country. It does not have a dorsal ridge.
The Green Frog’s dorsal ridge is incomplete but runs most of the way down its back.
The Mink Frog lacks a dorsal ridge or barely has one. Its marbled or speckled on its back.
The Northern Leopard Frog has circular spots over its body while the Pickeral Frog has more square like dots.
The Wood Frog has a dark mask around its face.
The Eastern Gray Tree Frog does not have any distinct markings on its body. It has yellowish orange on its hind legs and is the largest tree frog in the province.
The Spring Peeper has an X shape marking on its back.
The Boreal Chorus Frog has three lines down its back.
The American Toad is the only toad in the whole province.