The type of treats you give your dog makes a difference in your dog's diet.  Do you pass out cookies and scraps from dinner, or maybe a piece of popcorn or two?  Junk food for you becomes junk food for your pet.  In fact, some healthy foods for you are not good for your dog.  Raisins are a healthy snack for humans to munch on between meals, but they can be detrimental to the health of your dog.  Keep your dog's diet healthy even during snack time with treats.