Seen by a creek. Many small red spots.
No interactions present.
I can't see a picture, did you upload one?
No. Didn't take one.
Bit difficult to say without a photo - the habitat looks most likely for a species of spadefoot, some of which have red spots.
Try http://www.reptilesofaz.org/amphibians.html which is good for amphibians in Arizona.
Let us know if you figure it out!
Thanks for that.
Red-spotted toad Anaxyrus punctatus previously Bufo punctatus.
Lat/Lng: 31.688, -110.969