If you decide you want to try your pup on different food for whatever the reason, what kind of food should you buy for your puppy? Avoid canned food as they are made up of mainly water, salt and sugar. canned dog food and dry kibble are very different in this respect. Your pup does not need any salt or sugar so avoid the canned and the semi-moist food. Plus soften food can also cause teeth problems down the line for your dog. Stick with a dried food. To be more specific stick with a dried kibble food that has a meat protein source as one of its first two ingredients. Included in this kibble should be at least 28% of protein for your puppy to help they grow big and strong. Not only that but the kibble will help the puppy’s teeth. Puppies’ teeth are notorious for being sharper than adult teeth. Puppy kibble is designed for these teeth.