I think it depends how the dog's stomach. Most dogs do not have a problem switching fast but then some dogs do. If you are concerned that she has a sensitive stomach then you can mix the two foods together for a week or so but if you think she can handle it (and especially if it is an adult food that has similar ingredients to the puppy food of the same brand) then just give her a whole meal of the new stuff. The worst you will have to deal with his loose poo anyway really. |