answer:He absolutely must wear his e-collar! If he won’t eat with it on, you can take it off while you are supervising him, but if left unattended, he will chew out his sutures and require another surgery. The area of his surgery is extremely vascular, so bleeding is common post-op. A bit of blood is normal – lots of blood indicates an immediate trip to the vet. He may have blood tinged urine (and leakage) for 3–5 days, but you need to carefully monitor his urination for the first several days. Rarely, a blood clot will create an obstruction and keep him from urinating, so keep an eye out. Use shredded paper or Yesterday’s News litter. Clay litter will stick to the wound. Because of the bleeding and his pain level, you may want to restrict him to a small room (like a bathroom). Hopefully your vet is forward thinking enough to provide adequate pain control. Get thorough discharge instructions form your vet and make sure to ask questions about anything that you don’t understand.