Food allergy and an elimination diet?
My puppy is now 9 months old and I believe he has a food allergy to something as he has stools which range from loose to completely liquid depending on what he's eaten. The vet prescribed Royal Canin HP dog food which he has been on while I try to figure out what causes the diarrhea and he seems to do very well on it. I could just give up and keep him on this food forever, but it is a little more expensive than I'd like and I'd really like to know what his food allergy is so I can avoid it.
I can rule out meats easily enough by giving him beef/chicken/etc. while he's on the Royal Canin and seeing what happens, but how do I test other foods? For example, I read that among common dog allergies are wheat, soy, and eggs. I guess I could crack an egg on his dog food and test his reaction to that, but how do you test wheat and soy allergies?