Blood In Stool More Condition_symptoms What Could Be The Cause Of Blood In Stool?

What could be the cause of blood in stool? - blood in stool more condition_symptoms

My Boston Terrier puppy (almost five months) has blood in the stool. She has loose stools are normal, which tell us that he needed, had to purchase food, the results have been accustomed to. It is so perfect that it took us a while to understand what is being eaten. She is happy, very energetic, weight gain. She woke up twice last night (very rare, because they were able to sleep the whole night) and when I took her intestines softer than usual, but it seemed normal, and when my husband took two hours later, mucusy. As he wiped the blood, which was in brilliant color in the fabric.
We take the vet today. Any idea about the cause? He is constantly being reviewed, but I wonder if I am something like a stone or a stone, it may have eaten it.