Hart's right leg/foot

mysteriously injured 3 days ago in the living room when he fell in
the living room (we think) seems almost back to normal. He's walking
again pretty much without complaint and without keeping it lifted
much. Doctor 2 days ago kind of benignly suggested an x-ray, but we
held off, as it didn't seem like a break. It seems even less likely
that it was now. A sprain? Maybe a little swelling the foot but
very hard to tell, and he never was sensitive to touching it.