Unless you’re worried about not being able to feed your puppy frequently enough, I would not leave food out all day. There are many benefits to actually feeding your dog, rather than having the food out all the time. Actually feeding your dog – helps prevent the fats in the food going rancid and destruction of nutrients by prolonged exposure to air – helps you to better track how much your dog is eating – helps bonding, particularly when combined with a bit of training and/or handfeeding – helps your dog understand that you’re the provider of the food, not… Read more »