Can you guess?

The Dr. Seuss Foot Book teaches opposites by describing different kinds of feet, such as these "Sick feet."  The other day es was quite taken by this picture and asked me to guess what was wrong with the feet.  I suggested a couple of possibilities, such as the creature had stepped on broken glass or been stepped on by an elephant, but that wasn't enough.  So I tried a couple more.  Perhaps he fell asleep in the sun and burned his feet, or his new shoes gave him blisters.  I tried to encourage her to guess what was wrong, and finally, after I had named many possible causes, she came up with some on her own.  Admittedly some were variations on things I had said, but still she made them her own.