Hypothermia, low body temperature, is one of the most common complications of anesthesia and can result in serious side effects. Metabolism of amino acids, the building block of protein, occurs in all tissues in the body and heat is generated as a natural by-product. We will test the hypothesis that administration of amino acids to dogs undergoing anesthesia for a spay will have a significantly higher body temperature at the conclusion of surgery than dogs that do not receive amino acids.