Thanks for the replies. Sadly, my bun's condition has taken a turn for the very bad. The stone moved and is now blocking his urethra. He can't use the bathroom at all. He's lost 2kg in the last 24 hours. He has developed a bladder infection. He is very weak and the vet is concerned he won't survive surgery. He's been in their care for the last two nights, and is being force fed, as well as hydrated with shots. They're also now draining his bladder. The stone actually moved last night. Now, that the stone has moved, he's scheduled for emergency surgery for later this evening. They're hoping he gets a little strength back before surgery. If not, the surgery will be canceled. If it's canceled, they said I can either put him to sleep or bring him home and continue force feeding him on my own until he passes or gets enough strength for surgery. The surgery is also going to cost $1,500. I've already spent $800 since Monday on just vet visits, meds & x-rays. I honestly can't afford this either, and am borrowing the money. I am heartbroken and at a complete loss at what to do next. He's very sick and in a lot pain at this point. He was perfectly fine last week. I just don't understand how I missed this as the stone was growing. No matter what I decide next, I feel like I'm being selfish. If I put him down, then I feel like I'm not giving him a chance. If I put him through surgery or take him home, then I feel like I'll be prolonging his agony. T.T