WAB recommends Essential guidelines for transiting your dog's or cat's diet to new foodIntroduce the new food gradually over a 2-3 week period (please see the video illustration below, on what is meant by gradual transition)Ensure access to clean water for your pet all day (always!)Practice proper food preparation and hygiene (always!) Monitor for any sign of lethargy or discomfort (e.g. ignoring you when they don't typically give you a cold shoulder) How to introduce new food gradually