Kidney and Urinary Health in the Black Russian Terrier

Quick answer

Black Russian Terriers are predisposed to specific conditions affecting the urinary tract, primarily related to how their bodies process uric acid. Owners should monitor their dog for changes in urination habits, such as straining or blood in the urine, and maintain a consistent routine of observation to catch these issues early. While some conditions are well established in the breed, others are recognised tendencies that require proactive management through diet and regular checkups.

Hyperuricosuria

Hyperuricosuria is a condition where the dog produces urine with an abnormally high concentration of uric acid. This is well recognised in the breed. In male Black Russian Terriers, this is often linked to being homozygous for the SLC2A9 mutation. At home, you might notice your dog is urinating more frequently or showing signs of discomfort during the process. Because the urine contains high levels of uric acid, it can lead to the formation of crystals that irritate the lining of the urinary tract.

Your veterinarian will typically diagnose this through a urinalysis to check the pH and look for the presence of specific crystals under a microscope. If your dog is diagnosed, the vet may recommend a specialized diet designed to alter the urine chemistry, which helps prevent the crystals from forming in the first place. The most common mistake owners make is waiting for the dog to show obvious signs of pain before seeking an appointment. If you notice your dog lingering in the squatting position for longer than usual, have the urine tested immediately.

Urolithiasis

Urolithiasis refers to the formation of stones within the bladder or urinary tract. This is a recognised tendency in the breed, and it is frequently associated with the same SLC2A9 mutation mentioned previously. When these stones form, they can cause significant pain and may even create a physical blockage. This is a serious situation that requires urgent veterinary attention.

At home, you might notice your dog frequently attempting to urinate but only producing small drops, or you may see blood in the urine. Your vet will perform an abdominal ultrasound or take radiographs to visualize the stones. Depending on the size and location of the stones, the vet may suggest medical dissolution through diet or surgical intervention. Never assume that a change in urination is just a behavioral issue. If your dog is struggling to pass urine, this is a medical emergency that can lead to life-threatening complications if ignored.