Tinker needs a colonscopy

Tinker is an 8 year shih tzu mix who needs our help. Tinker has been through 2 metro Atlanta Animal Controls and adopted out a few times and rehomed. We suspect Tinker was dumped these times due to him passing blood when he defacates with blood droplets. When we rescued Tinker he was only 8 lbs. He was so underweight. Now, he’s 12 lb or a little more, eating prescription food. Tinker has has 2 surgeries, removing benign polyps. This has helped, but all was not removed. He still passes blood in hos stools. Tinker a a very sweet, loving, well behaved boy. Tinker is completely housetrained. Tinker is a happy boy and needs our help to find his forever home. Please donate any amount. Any amount matters and is greatly appreciated.