I was also wondering what you are feeding him?
If the plain
canned pumpkin doesn't help then try slippery elm bark from the health food store.
To give internally, mix about 1/4 teaspoon of Slippery Elm bark powder with cold water for every 10 pounds of body weight.
The above quote is from http://www.littlebigcat.com/?action=...em=slipperyelm
Good luck and keep us posted.