A method of increasing ketone bodies in an animal can comprise orally administering a composition to the animal, where the composition comprises medium-chain triglycerides in an amount of about 1% to about 15%, protein in amount of about 30% to 70%, fat in an amount of about 20% to about 40%, and carbohydrates in an amount of about 10% to about 25%. The composition can have a protein to carbohydrate ratio of at least about 2:1.
