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Plains Spadefoot vs. Great Plains Toad

Both breed in rain-filled pools after summer storms in the far west. The Plains Spadefoot has a vertical pupil, no parotoid glands, smoother skin and a black spade on each hind foot. The Great Plains Toad has a horizontal pupil, large parotoids, crests that meet in a boss on the snout, and big paired dark blotches outlined in pale.

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Plains Spadefoot

Spea bombifrons

Great Plains Toad

Anaxyrus cognatus
Plains Spadefoot vs. Great Plains Toad: comparison sheet with the differences marked

Photographs via iNaturalist under Creative Commons licences; the photographers are credited on the sheet.

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