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Arizona Toad vs. Great Plains Toad

They meet in the river valleys of central Arizona, where the Great Plains Toad's grassland reaches the Arizona Toad's streams. A: Plain grey to buff with a few small spots in the Arizona Toad; big dark blotches in matching pairs, each edged pale in the Great Plains Toad. B: Weak or none in the Arizona Toad; crests forming a V between the eyes and meeting in a bony hump on the snout in the Great Plains Toad. C: Fairly smooth, low warts in the Arizona Toad; warty in the Great Plains Toad.

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Arizona Toad

Anaxyrus microscaphus

Great Plains Toad

Anaxyrus cognatus
Arizona Toad 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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