The Basics of Nutrition:
Malnutrition is really a deficiency of needed nutrients. A person, dog, or cat could be eating a lot of food, but if that food doesn't contain what the body needs, then malnutrition can result, usually with severe health consequences.
Remember that water should be offered whenever your dog or cat appears warm (he or she is panting, looking for shade, or appears uncomfortable) and during travel stops.
Problems with Pet Foods Today:
Although many pet-food makers try to add these ingredients to the food after processing, most of these efforts involve synthetic forms, and studies in the past decade have shown that synthetic vitamins, minerals, and other nutrients are usually not as digestible, as easily metabolized, and often not nearly as effective as the natural ingredient. Neither dogs nor cats were designed to eat wheat, corn, rice or other cereal grains, yet these are the mainstay ingredients for hundreds of commercial foods. Because it's cheap, soy in its many forms (soy flour, soybean meal, and soy grits) is found in many pet foods, even though many pets have bad reactions to it (bloating and gas).