My 9-month-old orange tabby Sandy was neutered four days ago. Since then his behavior has changed. He's fussy with his litter mates (one male/one female), but he's become very clingy to me. BUT, right now he's hiding in our boat and won't come out! He's in a tiny location that we can't reach! Has anyone experienced this kind of behavior change after neutering? Is he sick? Dying? Or is he just a cat who became too curious and is now in a fix?! Any suggestions would be greatly appreciated!!