Couch's Spadefoot vs. Woodhouse's Toad
Both are plump, warty desert amphibians along the lower Colorado River; their records meet there. A: No big gland in the Couch's Spadefoot; a big oval gland in the Woodhouse's Toad. B: Yellow-green marbled black, no stripe in the Couch's Spadefoot; a pale stripe down the middle in the Woodhouse's Toad. C: Vertical (cat-eye) in the Couch's Spadefoot; horizontal in the Woodhouse's Toad.
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