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Cabeza Prieta Natural History Association
Sonoran Desert Reptiles
Bufo alvarius (Sonoran desert toad)



 Sonoran desert toad

Diet: insects, spiders, small lizards, scorpions, centipedes, mice, and smaller toads
Size: 4" to 7"

Our largest western toad. Dark brown, olive, or gray above with smooth skin; long, kidney shaped parotoids; and prominent cranial crests. Several large warts on hind legs stand out conspicuously against smooth skin. Enlarged whitish wart near angle of jaw. Cream below. Nocturnal. Voice: Low pitched, resembling a ferry boat whistle. Hoots ½ - to about 1 second.


Excerpts from A FIELD GUIDE TO WESTERN REPTILES AND AMPHIBIANS, 3/e by Robert C. Stebbins. Copyright (c) 2003 by Robert C. Stebbins. Reproduced by permission of Houghton Mifflin Company. All rights reserved.

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Natural History of the Sonoran Desert and Refuge