A 2-month-old intact female English Cocker Spaniel weighting 2.8 kg was presented with pollakiuria and urinary incontinence. On the inspection, moisture around the perineum and hindlegs was observed with a mild urine odor. No other abnormalities were detected on physical examination. Retrograde vaginourethrography revealed the urachal remnant. The vesicourachal diverticulum was surgically removed without complications.