thank you for such a warm welcome!! I have a 8 month old bull dog.. I went to the vet for surgery prep for spaying.. Took a blood test and her phosphorous count was high..he took a urine test and that came out clean.. He thinks its he food i was giving her...(origen for puppy) He asked me to switch food and take the blood test again.. I am now feeding her Wellness core for puppy...Never owned a bll dog before.. Have you ever heard of this?