Mexican Spadefoot vs. Great Basin Spadefoot
Both live on the Colorado Plateau of northern and eastern Arizona and breed in rain-filled pools there. A: Flat: no boss in the Mexican Spadefoot; a raised, soft (glandular) boss between the eyes in the Great Basin Spadefoot. B: No dark spot on the eyelid in the Mexican Spadefoot; a dark brown spot on each upper eyelid in the Great Basin Spadefoot. Both smell of peanuts when handled.
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