Clarence is a 4 year old, male, neutered, domestic short hair cat. Yesterday evening (Boxing Day) the owner noted spots of urine on the carpet, a couple of them seemed red. Clarence urinated a small amount a few times in his litter box and several times on the rug in the bathroom he was isolated in. On physical examination his vitals are within normal ranges, his bladder is very small on palpation, and he is uncomfortable on bladder palpation. He immediately strained to produce only 2-3 drops of bloody urine.