Hi VishaliMilk feeding can lead to stomach upset in your dog. As the dog are unable to digest the sugar lactose present in milk well. So it is advisable to feed the milk derivatives having less percentage of lactose in them such as curd, Cottage cheese and cheese. Proper diet would be feeding the correct amount of dog food to your dog with respect to its age and breed size. Generally the feeding guidelines are given on the food pack refer it and feed to your dog.