Ruby - Pet fit club: Before and after - Pictures - CBS News Oscar, a runner-up in the PDSA Pet Fit Club, lost a fifth of his bodyweight. As a result of losing weight, veterinarians discovered a lump on his side. Oscar had an operation to remove it from his spleen, and is expected to make a full recovery. "Without shedding the pounds, the problem wouldn't have been picked up, so we are eternally grateful to PDSA," owner Tanya Burrell said on the PDSA website. Oscar is still living life to the full and is happier and healthier than ever.