Western Narrow-Mouthed Toad (Great Plains Narrow-Mouthed Toad)
Like the eastern narrow-mouthed toad, this species has a plump body, small pointed head, and a fold of skin behind the eyes. This species is typically uniform in color, ranging from tan to gray or olive green, with few markings. The belly is white. Call is a high-pitched short "peel" sound that sounds similar to the buzz of a bee and lasts 1-4 seconds.
Similar species: The eastern narrow-mouthed toad has a darker overall color as well as a pattern of dark markings on the back. Also, its call is a bleating, nasal "baaaa," like the cry of a lamb, and is nothing like the call of the western narrow-mouthed toad. These two species often occur in the same areas, but their mating calls are so different they don't interbreed and hybridize.