Scans reveal multiple sites of deformity affecting Milo the Dalmatian's vertebrae, which are squashing both his spinal cord and the nerves coming out on either side. Noel offers the option of distraction fusion surgery to relieve both the pressure and the pain, while Laura and Max bring in their 10-month-old Chuskie pup Moon, who despite his youth has his life blighted by severe developmental elbow disease.