Distribution and Habitat
Occurs from southwest Oklahoma, central New Mexico, and south-central Arizona to the tip of Baja California, Nayarit and south San Luis Potosi; southeast California to central Texas. Some isolated populations are in the vicinity of Petrified Forest National Monument and southeast of La Junta, Otero Co., Colorado. Also, some scattered populations in California between Amos and Ogilby on eastern side of Algodones Dunes; Purgatory and Buzzards Peak Washes, Imperial Co.
Scaphiopus couchii is often found in shortgrass plains, mesquite savannah, creosote bush desert, thornforest and tropical deciduous forest (west Mexico) and other areas of low rainfall. Information from Stebbins (1985)