Jewlieee
Posted : 3/3/2011 2:44:38 PM
jessies_mom
If something in the food is causing your dog to itch, there's no way to know which ingredient(s) it is. Besides potatoes, Jessie is also allergic to fish, chicken, pork, and yeast, which is why I would recommend a very simple food with one protein and one carb source, like one of the Natural Balance Limited Ingredient diets. You need to choose a food with a different protein and carb source than the Merrick has. If your dog still itches after being on the new food for a few weeks, then you know he probably doesn't have a food allergy.
Good luck; I really hope you find out why he's itching.
This is really over-simplifying things imo.
Yes, there's ways to know what the dog is allergic to if it's food. You do an elimination diet. Even low ingredient foods have oils and other ingred's added to them, so you need to take that in to account as well. Keep track of the ingred's on the different foods you try and by process of elimination you figure out what may be causing the allergy. Also, keep in mind that there have been studies that dogs on low ingredient diets often develop taurine deficiency. You may need to add taurine to the dogs diet to prevent this if you go that route (as well as other supplements)
If it's an environmental allergy, there are vet tests for those - that often are quite pricey. I have a dog with environmental allergies and some food allergies but it's not worth it to me to run expensive tests. My dog is not that bad off. A little benedryl, some oatmeal shampoo, wiping her off after we're out hiking, etc. does the trick. For her food allergies, I figured it out when we recently switched foods and there was one ingred she had never had before. I switched to a food without and and voila - no more itchiness.
For a new dog that you do not know the history of, I'd have it checked out for fleas first. Dogs often itch around their necks when they are getting used to new collars. Itching can also be a stress - displacement behavior too.