Signs of stones
Watch for blood in your dog’s urine, the frequent passing of small amounts of urine, “accidents” in house-trained dogs, straining to urinate while holding the position much longer than usual, licking the genital area more than usual, painful urination that causes your dog to yelp from discomfort, cloudy and foul-smelling urine that may contain blood or pus, tenderness in the bladder area, pain in the lower back, or fever and lethargy.
If you notice any of these symptoms, contact your veterinarian at once. A dog who strains and then releases a flood of urine may have just passed a stone and should be examined. If you can find the stone, take it with you so it can be accurately identified. A dog whose urine is completely blocked has a medical emergency; a plugged urethra can cause urine to back up into the system, resulting in kidney failure. The backup can also cause the dog’s bladder to stretch to the point of rupturing or damaging the bladder’s muscle tone, making it to empty completely.