The sample of urine in Figure 1 was collected from a gelding with the history of persistent urine dribbling or urinary incontinence. The gelding was 20 years old and otherwise normal. A rectal exam revealed a large, distended urinary bladder that was so distended it hung over the brim of the pelvis!! The urine sample was milky and when allowed to settle there was a large concentration of sediment in the urine! These findings are consistent with sabulous cystitis in a horse!!