Stagbar is the orginal 100 natural antler dog chew and is ethically sourced ash 53 protein 32 moisture 14 fat 0 1 fibre 0 7 calcium 21g100g phosphorous 10g100g magnesium 26mg100g iron 998ppm sodium 0 4 potassium 0 02 extra large suitable for large to giant breeds or dogs with strong jaws the raw material used to make stagbars is sourced from naturally shed deer antler chewing releases feel good chemicals from the brain and keeps dogs happy busy and using up energy