Dogs are very picky eaters, so the best food for your dog depends on its breed and size.
Generally speaking though, a high-quality kibble will provide all of the nutrients that your dog needs without causing any allergies or other health problems.
A good rule of thumb is to read the label carefully before purchasing any kind of pet food product; some brands contain ingredients that can be harmful if ingested in large quantities over a short period of time (e.g., xylitol).
Dogs are carnivores, which means that they need plenty of protein in their diet. The best food to feed a dog is one that contains animal products like meat or fish.
Vegetables and grains are also okay in small amounts, but they shouldn't make up more than 30% of the total calories per day. It's important not to overfeed your dog because this can lead to health problems like obesity and heart disease!
Here are some examples of good foods to feed your dog: beef, chicken, lamb, fish, eggs, milk
An excellent supplement to add to your dog or cat's daily food intake is collagen. Read more about it here.