Hello--
I'm sorry your cat isn't well right now. Can you tell me if you are just seeing blood in the stool, or if he is actively bleeding? Is the blood coming from his rectum? Does he go outdoors? How is he acting? Eating/drinking/ using litter pan?
Hello-
PLEASE get your boy into the vet immediately. It sounds very much like he has gotten into something that is causing not only internal bleeding, but is blocking him and not allowing him to deficiate. Don't punish him for trying to go in the corner as he is in pain and not thinking as he should. I would call your vet now and get him in tonite if at all possible.
Please let me know how things turn out and what your vet finds.
Feline Healthcare
16 yrs health care mgmt & issues relating to cats, reproductive issues and multicat environments