I only fast one meal. That has them 24 hours to clear out whatever is in their guts. I think that is long enough. We go for walks and play fetch and anything that occupies them if necessary. The meal we fast is usually the one I would have given them at bedtime so they usually just sleep and then are very happy to see breakfast.
If your dog is having no upsets from his chicken meals then I would only go one week before adding in another protein. If there were any upsets to start with, I would wait longer.
1 month, 2 weeks ago
