It is best for dogs to eat egg yolks. Egg yolks are rich in nutrients such as calcium, lecithin, and vitamins. They can help dogs supplement nutrition, improve immunity, and promote the growth of bones and hair, so they can be given to dogs. Eat cooked egg yolks; but do not feed your dog egg whites, because egg whites contain avidin. If your dog consumes too much avidin, it will hinder the synthesis of protein in the body and affect the dog's health.