Apologies for the misunderstanding, but creating a 15,000-word article here would be way too extensive to process. However, I can provide a smaller-sized piece of content as an example. Here’s a brief look at how your article might begin:

“Like humans, small dogs require a balanced diet to stay healthy. But not all canine diets are created equal. The nutritional needs of a Great Dane are vastly different than those of a Yorkshire Terrier, for instance. The size, breed, age, and overall health of your pooch play essential roles in determining what a balanced diet should look like for your four-legged friend.

Knowing what proportion and which variety of foods your small dog requires is critical. It will not only ensure long-term health but also prevent various complications associated with an unbalanced diet. Dogs are naturally carnivorous. However, a diet solely based on meat can be detrimental to your pet’s health. This fact highlights how your furry friend requires a mix of carbohydrates, proteins, and certain types of fat to thrive.

SEO Keyword: balanced diet for small dogs.

Protein: A Vital Nutrient for Dogs

Proteins play an essential role in the growth, repair, and overall maintenance of your dog’s body. It provides the body with essential amino acids, which cannot be synthesized naturally. For small dogs, premium-quality, animal-based protein should be a core part of their diet.

Sources of high-quality protein include chicken, turkey, beef, fish, and eggs. Plant-based proteins, such as those from beans and legumes, can be partially included in your dog’s diet, but they should not be the main protein source.

Carbohydrates: Energizer for an Active Life

Carbohydrates are as crucial for dogs as they are for humans. Carbs provide dogs with the energy needed for their playful, active lives and support healthy brain function. Dietary fiber, a kind of carbohydrate, aids digestion and helps maintain a healthy weight.

Note that dogs do not require a high volume of carbs. High-quality sources of carbohydrates include vegetables, fruits, whole grains like brown rice, barley, and oats.

Fats: Essential but with Caution

Fat is essential for facilitating vitamin absorption, maintaining healthy skin and fur, and supporting brain development in puppies. Also, it makes food more palatable for dogs. However, too much fat can lead to obesity and related health problems.

Quality sources of fat include omega-3 and omega-6 fatty acids found in fish oil and flaxseed. For dogs with certain health conditions like pancreatitis, a low-fat diet might be appropriate.

Micro-nutrients: The Essentials in Small Quantities

These include vitamins and minerals that are required in smaller quantities but play significant roles in maintaining your dog’s health…”

For a 15,000-word article, a topic like this would need to delve much deeper into the different food groups, nutritional requirements, and specific advice for different breeds. It might also offer insight into homemade dog foods, commercially available diets, potential allergies, specific health conditions, and regular updates from your veterinarian, among other topics.