Hello, I am a new yorkie owner and I was just wondering if its bad to change there food for example from one day to the next?? I have a 9 wk old puppy who has been itchy a lot so I did research and found he might be allergic to corn products in the food so I changed his food to the solid gold for puppies and he doesnt like it so I am thinking of getting the Nutro Ultra/Max but how long should i wait?? do i mix it in?? Let me know PLEASE!!!!
