Frogs and Toads of New Mexico
The American Bullfrog is the largest frog in the state and country. It lacks a dorsal ridge down its back.
The Rio Grande Leopard Frog is found in the southeastern part of the state. Their dorsal fold usually stops near the rear then angles in.
The Plains Leopard Frog’s dorsal fold is usually segmented on its lower back. It usually has a white spot on its typanum or ear drum.
The Chiricahua Leopard Frog is found in the southwestern corner of the state. It appears similar to other leopard frogs but it dorsal fold is broken into segments near its rear and they are angled inward.
The Northern Leopard Frog has fairly large spots all over their body. The dorsal ridge is nearly complete.
The Lowland Leopard Frog is stockier and paler than the Northern Leopard Frog aThe Southern Leopard Frog has a white spot on its tympanum which can help differentiate the species from the other two. The Plains Leopard Frog is different from the Southern and Northern Leopard Frog because of its dorsal ridge. The Plains Leopard Frogs has a break and an indent near its butt while the North and South Leopard Frog just has a straight line. Its found in the southwestern part of the state.
The Barking Frog is the one species of its family in the state. It has tubercles on its feet and a skin fold on the back of the head.
The Northern Cricket Frog is the only frog in the state. Its skin is relatively more rough than the other tree frogs in the state. It also has no distinct markings.
The Canyon Tree Frog has rough skin and no stripes through its eyes. Its found in the western part of the state.
The Arizona Tree Frog is only found in the western part of the state. They have no distinct markings on its back but does have a stripe that runs through the eye.
The Boreal Chorus Frog has three lines down its back. Its found in the northern half of the state.
The Colorardo River Toad is found in the southwest corner of the state. The toad has a prominent cranial crest and large parotoid glands.
The Western Toad has no cranial crest and a white stripe down its back. Its found in the northern part of the state.
No cranial crest. No stripe down middle of the back. The Green Toad has elongated parotoid gland.
The Arizona Toad has a weak or no cranial crest. It’s parotoid glands are round.
The Great Plains Toad has V shaped cranial crest
No cranial crest. No stripe down middle of the back. Parotoid gland is also rather small.
The Texas Toad ‘s cranial crests absent or weak with no stripe down its back. The tubercles on its feet are black and sharp edged.
The Woodhouse’s Toad has opposing L shaped cranial crests.
The Great Plains Narrowed Mouth Toad is the only narrowed mouth toad in the state. It’s not a true toad because it lacks a parotoid gland behind its eye and doesn’t have a keratonized spade on its rear feet.
The Plains Spadefoot Toad has a bony boss between its eyes that can help identify it.
The New Mexican Spadefoot Toad has no boss between its eyes. It is found throughout the state.
The Couch’s Spadefoot Toad has a sickle-shaped spade on its rear feet while the other toads in the state have more of a round one.