So the vet called last night and Thumper took a turn for the worst. They found a mass in his stomach which they thought could be more than just stasis. They didn't think he'd survive surgery to remove it so they were going to keep him over night, pump him with IV, pain meds and critical care to try and get him stronger for surgery. Unfortunately he did not make it through the prep treatment. He passed away without pain due to the amount of pain meds they gave him. I will always love him and miss the little mischievous man more than anything.