T.Forrest & Sons hollow hooves are simply a cattle hoof that has been slowly air dried. They are a long lasting natural treat that help keep your dog healthy and happy. INGREDIENTS 100% Natural cattle hoof. TYPICAL ANALYSIS Protein - 38.2% Oil - 1.2 %, Fibre - 0.9 % Ash - 54.6 % FEEDING GUIDE Feed your dog with these, as a treat or a reward. Always supervise your dogs when feeding these treats, and provide fresh drinking water for your dog.