Thanks to all you guys forthe responses. After reading the information from the posts and the links, I have drawn a conclusion that he may have some form of EIC. I am having another vet check him this weekend to rule out other possible problems. All this information greatly helps. I never expected this to happen and want to do everything in my power to protect my best friend from serious life threatning problems that can be avoided. I hope to continue working with him in the field on small outings, as he loves to hunt up Quail, Chukar, and Pheasants.I'll reply back after I get him checked by this other vet.