My son's big male, Six, has been at the vet since Monday with a blockage. Sounds like it is really pretty serious, as they are concerned his bladder is perforated. They will find out today. My son was told that if it is, they can perform surgery, but can't guarantee it will work and he would suffer very much throughout. I am really worried. This is my son's oldest and most treasured cat. He has already said he will have him put to sleep rather than let him suffer. Prayers please.