The adage 'You are what you eat' applies to dogs as well as people - however more is not necessarily better. Puppies and young dogs suffer from a variety of bone and joint disorders. Especially important are those diseases caused by the incorrect feeding of puppies and young dogs, since these can be avoided. Over-feeding and over-supplementation with unnecessary nutrients and minerals can have serious consequences. If you are getting your first puppy make sure you ask your vet for advice on feeding them.