Obstructive urolithiasis is the retention of urine subsequent to lodgement of calculi anywhere in the urinary conduct. Male buffalo calves are most frequently presented to the polyclinic, IVRI, with the retention of urine in the peak winter due to the decline in water intake and deficiency of vitamin A. Rupture of the urinary bladder or urethra, uraemia and death are observed as the most common sequel to obstructive urolithiasis especially in buffalo calves. Though it has been found that calves below the 6th month of age are most commonly affected, in this study most reported cases were 3 and 4 months old. Rupture of the bladder was found to occur after the 3rd day of retention of urine but it was also seen before 3rd day in those cases in which frusemide was given by quacks. Buffalo calves with retention of urine for 6 days or more are presented in the fewest numbers due to the death caused by uraemia after rupture of the bladder. Urethral rupture is the worst sequel, occurring in those cases where the calculi are lodged in the glans penis.