Looks like a recently metamophed toad to me, possibly Bufo americanus, Bufo terrestris or Bufo fowleri. (Based on your location)
I would bet money on Bufo terrestris though, given the organization of the pigmentation spots on the dorsal side.
Hard to tell at that age for me, I have not quite developed "the eye" yet for juveniles. I am sure that a few of the more experienced here can elaborate further.