The Tail of Two Deserts ...

-Yes, there are "tails" of two deserts in southern Arizona! 
-The northeastern "tail" of the Sonoran Desert encompasses western parts of southern Arizona, while the northwestern "tail" of the Chihuahuan Desert can be found in the eastern edge of southern Arizona! 
-Wow!  Not just one, but TWO deserts with different characteristics, critters, vegetation ...
-Both deserts may extend well into Mexico, but the "tails" are in southern Arizona!