Frogs and Toads of South Dakota
The American Bullfrog is the largest frog in the state. The American Bullfrog lacks a dorsal ridge down its back which makes it easy to identify.
The Wood Frog has a distinct mask around it’s eyes. They are a variety of different colors, from red, brown, and bronze.
The difference between the Plains Leopard Frog and the Northern Leopard Frog deals with its the dorsal ridge. The Plains Leopard Frog’s dorsal ridge indents near its butt. The Plains Leopard Frog is also only found in the southeastern part of the state.
The Northern Cricket Frog is found in the Southeastern part of the state. Their skin is relatively rougher compared to the other tree frogs in the skin.
The Gray Tree Frog and Cope’s Gray Tree Frog are nearly identical besides their calls and chromosome numbers. The frogs are found in the eastern part of the state.
The Boreal Chorus frog is a small frog found throughout the state. They have lines that run down their back.
The American Toad is found along the eastern edge of the state. The cranial crest and the parotoid gland of the toad do not touch or they connect with a spur.
The Canadian Toad is found in the north eastern half of the state. Its cranial crest form a boss (bump) in between its eyes.
The Woodhouse’s Toad cranial crest forms opposing L shapes. It is found throughout the state.
Great Plains Toad’s cranial crest forms a V shape. It is found throughout the state.
The Plains Spadefoot toad is the only spadefoot toad in the state. Look at the rear foot of the toad and you will find a keratinized spade on it which no other toad or frog in the state has.