Food Requirements

Dogs are adaptable creatures. They can, for instance, utilize protein foods, like meats, for energy if their intake of carbohydrates is deficient.

They must, however, be provided with a minimum level of each of around thirty nutrients, including the vitamins and minerals, if they are to stay healthy.

All the modern prepared foods, and the great majority of home-mixed diets, will provide an adequate supply of essential nutrients.
 
Some animal protein is essential to maintain a dog's health. A vegetarian diet for dogs can be devised but requires skill, although there is no doubt that dogs do not need the level of animal protein in their diet that is commonly provided.

Some fats are also vital in the diet, providing certain essential fatty acids, and acting as carriers for the fat-soluble vitamins.