Toad

This is either an American Toad, Anaxyrus americanus, or a Fowler's Toad, Anaxyrus fowleri. From the photo I cannot tell you anymore, both species are common statewide, so you can just list it as Anaxyrus sp.

The legs appear too short to be a cricket frog, so this is likely a juvenile of another species. I was not able to identify it here: http://www.tn.gov/twra/tamp/frogid.shtml Maybe someone with more knowledge of froglets that morph around this time in the area would be more helpful.