Pet nutrition principles for feeding dogs continue to evolve. An example of how far we've come concerns what we veterinarians, 30 years ago, used to call "All Meat Dogs." These pathetically sick and dying dogs were coming in to clinics all over the United States, thin, weak, with hair loss and metabolic imbalances as a direct result of eating a nationally advertised "All Meat" canned dog food.
Nearly everyone at that time thought that because dogs were carnivores (they're technically omnivores) that "all meat" diets must be the best thing for them! We know now that dogs cannot survive if fed 100% meat for extended periods.
Since then, pet food manufacturer's knowledge has changed and they now make some properly formulated foods. We've all learned much more about just what it takes to put together the right combination of ingredients in the proper ratios to create a nutritious diet. Unfortunately for the pet food purchaser, and worse for the dog, there are available all across the United States various brands of foods that, despite what the label may claim, are NOT a good source of nutrition for your dog. Some are actually harmful!