My 14 year old cat has had for 2 weeks now a mushy stool and then a harder more constipated stool all in the same day and mostly the poop will stay in there. We had to help him get it out just now. His rectum is so red and he hurts. Does this sound like Irritable Bowel and if so is it necessary to have a scope and biopsy done? Or can we just try to change his diet? He just had blood work and x rays done a couple of days ago and all was well.

