My pup is also doing this MrsMyrtle. ::sigh::
He had some sores on his feet and the doc gave him a cortisone injection last week. It really helped and he left them alone, until about Sunday and then it was downhill again.
So we're pumping the pup full of prednisone. I really hope it helps.
Also, the "cone of shame" is awful. He walked around last night for hours, I'm sure.