Agreed, diet can contribute to bloody stool. When my sons yorkie comes to stay with me he has a bit of an upset tummy and sometimes a little blood in his stool when he changes to the diet my yorkie is on. I gradually ease him in to the new diet (which I think is superior LOL) using a bland diet of boiled chicken and rice. Also a little bit of pumpkin if the stool is loose. All the best |