range of colorado river toads toads
Colorado River Toad. The Colorado River toad (Bufo=Incilius alvarius) is a large mainly terrestrial toad ranging in length from 4.3 to 7.4 inches (110 to 187 mm). It has leathery skin that ranges in color from olive brown to black with a few, low rounded bumps and enlarged glands on the back of the limbs.