my 14 week old puppy was on beta dry food but we changed to Hills as we heard it was the best. Recently though we were advised to change from Hills (by police dog handler friend) and decided on Burns puppy food. The first day we mixed a very very small amount with the Hills and she was fine. But when hubby fed her yesterday she refused to eat it. Today the same happened and he had to throw out the food that had some burns in it and replace with just the Hills. Should we persevere with adding the Burns or try another one? Dont want to be left with lots of unused bags of food but will need to buy new bag of Hills soon.