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Dalmatian urinary problems.

Dalmatian urinary problems.

What’s up with Dalmatians and urinary problems? Unlike other breeds of dogs,
the Dalmatian is equipped with a unique liver and kidney biochemistry that
makes it different than many other dogs. The issue is that this breed carries
a genetic mutation that impairs its ability to process uric acid, which is
instead abundantly excreted in the urine. To be more specific, the breed lacks
an enzyme responsible for dealing with purine-type proteins, which are found
in many meats.

Normally, in healthy dogs with normal livers, purines are converted into ****
hypoxanthine, which is then converted to xanthine, which is then converted to
uric acid, which then finally coverts to allantoin that is easily soluble in
water, and therefore, can be easily secreted in urine. It is thanks to the
hepatic enzyme uricase that uric acid is oxidized and transformed into

In Dalmatians, uric acid doesn’t successfully convert into allantoin. Their
liver cells are unable to absorb the uric acid and allow it to transform into
allantoin. So Dalmatians excrete uric acid without this last important
conversion taking place.

Since uric acid is not soluble, it ends up depositing in the bladder and
kidneys, causing the formation of uric acid crystals or even a uric acid
bladder stone over time. The bladder and urinary tract become irritated by
these crystals and cause infections. At times, the stone may cause a blockage,
which is considered a medical emergency. The medical term for the presence of
uric acid in the urine is hyperuricosuria.

What can Dalmatian owners do to protect their dogs from recurrent urinary
stones? There are several steps they can take. As with many other medical
conditions, it’s best to prevent rather than cure.

Preventing Urinary Stones in Dalmatians

The following are some ways Dalmatian owners can help prevent the formation of
uric acid stones.

  • Allow your Dalmatian to urinate frequently is helpful as frequent urination helps flush out any potential sediments before they have the time to accumulate and transform into a stone. Your Dalmatian should urinate at least every four to five hours.
  • Your dog can drink lots of fresh water , which is helpful as it helps dilute uric acid. Feeding dry food with water on it is also helpful. The British Dalmatian Club recommends giving distilled water to dogs with a confirmed diagnosis of urinary stones.
  • Offer diets with lower protein because lower protein equates to lower purine. Veterinarians can suggest appropriate diets and there are also some prescription diets purposely made with Dalmatians in mind. Canned foods are often suggested as they allow increased water consumption. A common diet prescribed is the anti-urate diet, Hill’s u/d.
  • Avoid food rich in purine such as anchovies, kidney, beef, game meats, gravies, herring, beef or calf liver, mackerel, and sardines.
  • Add one hard-boiled egg per meal (if the Dalmatian isn’t allergic to them) and a tablespoon of canola oil, the British Dalmatian Club recommends. You can pulverize the shells of the hard-boiled eggs and add one-quarter of a teaspoon of the shells to the meal.
  • Vets may prescribe long-term therapy using the drug allopurinol, in some cases. However, too high doses or prolonged use may lead to the formation of xanthine stones.
  • Since uric acid stones are more likely to form in acidic urine, the urine can be made more neutral to alkaline by adding potassium citrate to the dog’s diet. While sodium bicarbonate was once suggested, it has been found to possibly worsen symptoms. Always consult with your vet before adding any supplements to a dog’s diet.
  • Monitor the Dalmatian’s urine pH with special dipsticks. Ask your pharmacy about super litmus paper to test urine for abnormal acidity or alkalinity. The goal is for the urine to be at pH 7.0. Urates tend to form in acidic urine (pH below 7.0).
  • Routine urinalysis may be suggested so to monitor the dog’s urine. The best urine is collected first thing in the morning prior to feeding.

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Interestingly, there has been a push to breed this mutation out of the gene
pool by breeding Dalmatians with pointers and then breeding the progeny with
purebred Dalmatians.

Did you know? Dalmatians account for 80 percent of dogs affected by uric acid
bladder stones according to veterinarian Wendy C. Brook. The remaining 20
percent are composed of other breeds with the same mutation (the English
Bulldog and Black Russian Terrier are other breeds) or dogs with an impaired
liver (liver shunt). It appears that males are more likely to form stones than
females, perhaps because females have a wider urethra, which allows the stones
to pass through.

Dalmatian urinary problems.

Dalmatian urinary problems.


Treatment of Urinary Stones in Dalmatians

When a stone blocks a Dalmatian’s urinary tract, or there are a large number
of stones, surgery is required. A blocked urethra preventing the dog from
urinating is a medical emergency. The blockage causes obstruction of the
urinary pathway, allowing urine to back up instead of being expelled. This can
happen within 24 hours.

Cystotomy is a less invasive type of surgery where the bladder is opened to
remove the stones. This type of surgery allows for a rapid recovery. In cases
where there are just small stones, they can be removed by urohydropropulsion,
a non-surgical procedure where the stones are flushed out the bladder by using
a urinary catheter.

There is a third option which is called “ultrasonic dissolution” where high-
frequency ultrasound waves are used to break the stones into smaller particles
that can then be easily flushed out. However, this method is not too popular
as it’s not widely available.

This article is accurate and true to the best of the author’s knowledge. It
is not meant to substitute for diagnosis, prognosis, treatment, prescription,
or formal and individualized advice from a veterinary medical professional.
Animals exhibiting signs and symptoms of distress should be seen by a
veterinarian immediately.


Devika Primić from Dubrovnik, Croatia on April 21, 2014:

Dalmatians originated from my region Dalmatia and are such beautiful dogs very
smart and great pets. Helpful tips here on urinary problems.