Sonoran Green Toad vs. Chihuahuan Green Toad
Close relatives; the Sonoran is in south-central Arizona, the Chihuahuan in the far southeast, and both breed in monsoon rain pools. A: Green or yellow ovals, each ringed by black: the black lines JOIN into a net over the whole back in the Sonoran Green Toad; small black spots and bars that do NOT join into a net in the Chihuahuan Green Toad. The two are never found together in Arizona: Altar Valley and the Tohono O'odham Nation vs the Sulphur Springs, San Simon and San Bernardino valleys.
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