My friend Roger Repp of the Tucson Herpetological Society calls these "junk toads" because they are so common in the area. But heck, I'd never encountered them before, and they look like little space aliens, so I think they're great. Like most of the toads that live in southern Arizona's hot desert, these guys are mostly seen only in the late summer monsoon season, when this part of Arizona gets most of its rainfall.

I saw these three and several others driving around at night. The lighter individuals at top are male; the darker individual at bottom is a female. The bottom two toads are both topped with fine red dust, showing that they spent their day buried in the desert sand.