Almost a complete food source for dogs, the egg.
The egg is also a great source of protein; it helps build muscle, strengthen the hair, and repair tissue. Hardboiled is the most foolproof and straightforward method for feeding eggs to your pet, since there is no need for extra non-stick ingredients (i.e., butter, oil, or margarine for scrambling). The cooked egg can be cut into heart chunks, or diced and mixed into the usual kibble. The egg can even be given as is — after it has cooled thoroughly.