Common Causes of Blood in Dog Urine | Canna-Pet® (2023)

If your pet "has to go away," you'll usually turn a blind eye and make it easier. Or it's become such a routine part of your life that you don't even pay attention to it anymore.

As typical or mundane as it may seem, keeping track of your dog's urine or urination habits can be an extremely useful indicator of possible conditions or illnesses he may have. By catching these signs early, you can proactively treat an illness rather than facing the effects of urine discoloration much later in the process.

Blood in the dog's urine is generally a serious symptom. However, finding blood in the dog's urine can also be part of a natural process or the way your dog reacts to external (rather than internal) factors. For this reason, it is recommended that if you notice any abnormalities in the color or smell of your dog's urine, it is recommended that you take your dog to a veterinarian immediately, just to be on the safe side.

Visually, the color of your dog's urine can be red or amber, or even orange and brown, indicating blood. Even if the detection of blood in the urine follows a recent injury, owners must be vigilant and conduct an investigation in case the cause traces back to another problem. This discolored urine can be due to bacterial infections or life-threatening diseases.

Although it is a disease in its own right, the medical term for this phenomenon of blood in the urine is hematuria. Sometimes it can also be accompanied byVomiting and diarrhea in dogs, as well as a variety of other symptoms. These symptoms depend on the underlying problem that is causing the disease or the disease in general.

For example symptoms oflethargyAccompanying hematuria can mean anything from poisoning to a prostate infection, but with a keen eye that recognizes changes in behavioral patterns, the cause can be pinpointed more quickly. Because of this, paying attention to other abnormal dog behaviors is important, and sometimes it can even be life-changing.

Common Causes of Blood in Dog Urine | Canna-Pet® (1)

The causes of hematuria can be determined by a variety of factors ranging from age to gender to race. If the dog in question is older, it could mean something as serious as urinary tract or kidney cancer. Dog breeds that are most prone to getting such cancers in the lower internal organs of the dog arescottish terriers,Shetland Sheepdogs, jWest Highland White Terrier.German shepherdsThey are more prone than other breeds to develop renal cystadenocarcinoma, a type of kidney cancer in dogs in which a tumor or abnormal inflammation in the kidneys often indicates the disease.

Younger dogs that have blood in their urine are less likely to have developed cancer. Instead, they are more likely to have familial hematuria, to which certain animal families are more prone to develop than others. For example,Labrador-Retrieverare prone to cystinuria, which causesKidney stones in dogs. There are a variety of bacterial diseases in the dog's urinary tract and lower regions that can also cause this phenomenon.

Of course, this does not exclude other external factors detached from the dog's internal organs, such as poisoning and even physical injury or trauma.

urinary tract infections or cancer

Urinary tract infections (UTIs) in dogsThey are more common in women than men because of the location of the female urethra in the body. Blood in your dog's urine is a symptom he or she may have, along with difficulty urinating or breaking house training. In addition to being painful or violent, urination may take longer than normal or occur more frequently than normal. Also, be aware of the smell of your dog's urine as it can have a stronger odor. If your dog is constantly licking his genitals, it can also be a sign that a urinary tract infection is the cause of the blood spots.

Bloody urine can also indicate more serious urinary tract conditions, such as cancer. The most common urinary tract cancer in dogs is transitional cell carcinoma, or TCC. TCC is an invasive, malignant, and metastatic cancer that causes tumors to grow around the bladder. This means it is aggressive and spreading.

Genetic predisposition, as well as environmental factors, are the most likely proponents of this disease, which, as mentioned above, Scottish Terriers are at highest risk of contracting. It is thought that environmental factors could include ingestion of pesticides and herbicides. WhileBladder Cancer in DogsTCC is considered very rare, affecting thousands of dogs each year.


As with CBT,tumors in dogsit can often indicate cancer. But some tumors are also noncancerous. These tumors aren't cancerous, they're benign, which means they don't spread.

However, benign tumors that are large enough to block or put pressure on vital organs, in this case the bladder or kidney, can cause problems such as primary organ dysfunction or failure. Blood in the urine can occur when organs are stressed, damaged, or at risk from these tumors. Sometimes these tumors develop throughout the dog's life and don't appear until much later in their life cycle. Although only 3% of bladder tumors are benign, this is a possibility that your veterinarian or specialist should definitely consider when checking.

bladder or kidney infection

Common Causes of Blood in Dog Urine | Canna-Pet® (2)

Bacterial infections can affect a dog's bladder and kidneys. Cystitis, which often involves squatting or sitting, occurs when bacteria enter through the rectal or genital area. This is followed by the constant need to urinate, although the urine does not come out and when it does come out it may be bloody or cloudy. It can also indicate a blood infection that has directly affected the bladder or kidney areas, causing physical symptoms.

Whether it's a blood or organ infection, detecting blood in your dog's urine may indicate one of the following signs.

Pyelonephritis:This bacterial infection is sometimes due to a blockage from kidney stones or urinary tract infections spreading to the upper regions of the internal body. When this crash occurs, it can become extremely dangerous. Blood in the urine can indicate this phenomenon in its early stages.

Sepsis: This is a bacterial infection of the blood that can affect the bladder and kidneys. This happens when unbroken urine is pushed into the bloodstream. Discolored urine is a very likely symptom of this condition, as are fever, back pain, and abnormal urinary habits.

Kidney or bladder stones:These are common in certain dog breeds, where conditions can range from the need for antibiotic treatment to surgery. Changing your diet can prevent this condition and work to clear stones that have already formed. This is different from an infection and will be explained separately so as not to confuse you.

kidney or bladder stones

As mentioned above, some dog breeds are more prone to kidney or bladder stones than others, such as the Labrador retriever. Other breeds prone to high urine or blood imbalances includeLhasa Asos,Yorkshire-Terrier,Dalmatian, English Bulldogs andminiature poodle. However, this can happen to any dog ​​as the condition is not strictly hereditary. Kidney stones tend to form when the kidneys fail to reabsorb certain amino acids, resulting in crystals or stones that form when they precipitate in the dog's urine.

Blood may be present in the dog's urine if the stones are accompanied by an imbalance in the blood or urine. Too much calcium can lead to stone formation, as can diets high in uric acid or alkaline to create high urine pH.

Other symptoms associated with kidney stones include difficulty urinating, licking the genitals and evenweight lossjLoss of appetite in dogs. However, sometimes the signs and symptoms are absent: stones are only discovered after a diagnosis by a specialist. Surgery or removing the stones through diet changes are two ways to treat kidney stones. Another is extracorporeal shock wave lithotripsy (ESWL), in which sound waves break stones into smaller pieces that reduce blockage in the tract.


Another possible cause of blood-colored urine could be poisoning. If your dog has ingested toxic substances, including rodenticides or pesticides, it can damage internal organs. Toxins like these are not only foreign substances that interfere with normal bodily functions, but in some cases they can be deadly. Blood in the urine is just one symptom of this poisoning in dogs.

Other symptoms that may accompany a change in your dog's urination pattern include:lethargy,to, exercise intolerance or shortness of breath. This is likely to result in an immediate change in your dog's behavior and well-being, so immediate attention is needed if your dog has eaten something it shouldn't.


Common Causes of Blood in Dog Urine | Canna-Pet® (3)

If your dog has recently suffered trauma or physical injury, there may be nothing particularly wrong with the urinary tract. Blood in the dog's urine or a change in normal urination habits could be a reaction to external factors that have upset the dog. However, discoloration in urine should be monitored by a veterinarian or specialist to make sure there is no damage to internal organs or a risk of infection.

Prostate or urethral infection

Male dogs are likely to develop prostate or urethral infections. Bloody discharge from the penis is a very likely symptom of this condition. If you have a walking disability, lethargy and loss of appetite orfever in dogs, it is advisable to get examined and see what the probable causes are. If urination is difficult, urine flow seems significantly reduced, or defecation is extremely difficult, your dog may be struggling with an infection in those areas. However, a swollen prostate in dogs is something that comes with aging and is not an indication of cancer or infection, but rather an infection.

If it's severe or cancerous, male dogs often need surgery or spaying to survive the disease. Bacterial infections can spread quickly, so it's best to find out as soon as possible for prompt treatment.


Conversely, a swollen vulva in bitches can indicate heat. Heat is a normal part of a bitch's reproductive cycle, during which she will be "in heat" about once every six months to twice a year. Dogs take about two years to develop regular cycles. This can be unusual as female dogs are often spayed or spayed to prevent uterine infections and breast tumors.

Spaying male dogs can also help prevent prostate cancer. By removing your pet's reproductive organs, they will become infertile and less likely to develop such diseases. However, female dogs who are not spayed or spayed will have "puppy periods" and may also become pregnant.

Estrus is mostly noticed because the blood in the urine may not actually be coming from the urinary tract but from the same area. The blood from the vaginal discharge leaves the body and is first seen in the dog's urine. A good way to tell that blood might be leaking from the vagina is if instead there are drops of blood left behind when the dog sits. If she's neutered, that's no problem; However, the origin of the blood is important in order to know what the cause may be.

Since blood in the dog's urine can, to varying degrees, be a single factor in many different medical conditions, close observation of the dog's daily routines and behaviors cannot be underestimated. This helps the vet know what tests to run and what to check, giving them more information to base a diagnosis on. If a diagnosis can be made more quickly, treating the disease is easier and quicker than if it is detected later.


  1. Desfoss, Rebecca. "What to do if you see blood in the dog's urine?", accessed November 13,
  2. "Blood in the Urine in Dogs: Symptoms, Causes, Diagnosis, Treatment, Recovery, Management, Costs". WagWalking, accessed November 13,
  3. "Blood in Dog Urine". PetMD, accessed November 13,
  4. Burk, Anna. What does blood in dog urine mean? - American Kennel Club." American Kennel Club 17 July 2017, accessed 13 November
  5. "Causes of Blood in Dog Urine". PetHelpful, October 12, 2015. Retrieved November 13,


Common Causes of Blood in Dog Urine | Canna-Pet®? ›

Bladder infection, or a UTI (this of course is the most common cause of blood in dog's urine). The prostate (this would be an issue for male dogs who pee blood, which possibly indicates an issue with the prostate). Bladder stones could also be a culprit, due to nutrition, genetics, or persistent infection.

What should I do if my dog has blood in his urine? ›

If you see your dog peeing blood, contact your vet to make an appointment as soon as possible. As a general rule, any dog peeing blood for the first time should be seen by a vet within 24 hours. At the visit, the vet will try to diagnose the underlying cause of the blood by analyzing your dog's urine.

Can dogs pee blood from stress? ›

Causes – Lower urinary tract bleeding

FLUTD has been linked to stress and anxiety. Prostate – the most common causes of bleeding from the prostate in an unneutered dog are prostatitis (infection) and benign hyperplasia.

Can blood in urine go away on its own? ›

Hematuria is the presence of blood in the urine. This can be caused by a number of different conditions. Most of the time, the cause is not serious and will quickly self-resolve.

Does kidney failure in dogs cause blood in urine? ›

By the time a dog experiences renal failure, the disease has advanced and you may notice such signs as: Blood in urine. Lethargy. Pale gums.

Can dehydration cause blood in urine? ›

Can dehydration cause blood in urine? Severe or prolonged dehydration can lead to blood in the urine. Not drinking enough water can exacerbate any underlying kidney conditions that contributes to hematuria, such as kidney stones.

Will a dog UTI heal on its own? ›

Can a dog's bladder infection go away on its own? Although in some cases bladder infections in people clear up without the need for medical care, this is unlikely to be true for your dog.

How can I treat my dog's UTI at home? ›

Cranberries and blueberries are fruits that you can add to your dog's diet to support their urinary tract. Many high-quality dog foods will contain these ingredients already. Apple cider vinegar can be added to your dog's water bowl in small amounts and may ward off infection.

What can I give my dog for a UTI? ›

Often, veterinarians will prescribe an antibiotic to help provide immediate relief to a dog with a UTI. It's common for vets to prescribe broad-spectrum antibiotics, such as amoxicillin, amoxicillin-clavulanic acid, ampicillin, and potentiated sulfonamides. These antibiotics target a wide array of UTI-causing bacteria.

How do I know if my dog has kidney failure? ›

Symptoms of Kidney Failure in Dogs

Weight loss. Nausea and vomiting. Pale gums. Loss of balance, or stumbling.

What does it mean when a dog has red blood cells in urine? ›

Red Blood Cells.

Small numbers of red blood cells are often found in urine collected by cystocentesis or catheterization, but large numbers of red blood cells usually indicate bleeding. This may be caused by conditions such as bladder stones, infection, coagulation problems, trauma, cancer, etc.

What is the most common cause of blood in urine? ›

Urinary tract infections (UTIs) are the most common cause of hematuria. Since the urinary tract is composed of the bladder, ureters, and kidneys, a UTI refers to an infection anywhere in that system.

Can blood in urine be nothing to worry about? ›

In many cases, the cause is harmless. But blood in urine also can be a sign of a serious illness. If you can see the blood, it's called gross hematuria. Blood that can't be seen with the naked eye is called microscopic hematuria.

Does blood in urine mean kidney damage? ›

Bloody urine may be due to a problem in your kidneys or other parts of the urinary tract, such as: Cancer of the bladder or kidney. Infection of the bladder, kidney, prostate, or urethra. Inflammation of the bladder, urethra, prostate, or kidney (glomerulonephritis)

Is blood in dog urine an emergency? ›

Is blood in dog urine an emergency? If the dog is bright and well otherwise, not in obvious pain, and is still passing urine, blood in pee isn't an emergency. However, it is potentially urgent, and it's best to get seen within 24 hours.

What are the 3 early warning signs of kidney disease? ›

3 Warning Signs That You May Be Experiencing Kidney Failure
  • Dizziness and Fatigue. One of the first possible signs of weakening kidneys is the experience of overall weakness in yourself and your overall health. ...
  • Swelling (Edema) ...
  • Changes in urination.

What dog breeds are prone to kidney disease? ›

Breed: Some dog breeds, including English Cocker spaniels, bull terriers and German shepherds, are more likely to develop particular types of kidney disease. Learn more about a very special German shepherd named Buddy that was diagnosed with kidney failure.

What causes blood in urine if there is no infection? ›

Common Causes of Hematuria:

Enlarged prostate. Kidney stones. Vigorous exercise such as long-distance running. Certain drugs, such as blood thinners, aspirin and other pain relievers, and antibiotics.

How urgent is blood in urine? ›

Most cases of visible blood in the urine are not emergencies. However, if you're experiencing symptoms such as lightheadedness, inability to urinate or extreme pain, see a doctor immediately. Otherwise, Dr. Gomella recommends seeking an evaluation within a couple of weeks.

Can digestive issues cause blood in urine? ›

Blood in the urine is typically a sign of an infection in the urinary tract, but it can sometimes be caused by other conditions. An upset stomach may accompany many illnesses or could be due to a digestive infection.

How do vets check for UTI in dogs? ›

To diagnose a UTI, your veterinarian should collect a sterile urine sample from your pet. The best method to collect urine is by a technique called cystocentesis, during which a needle is inserted through the body wall into the bladder and urine is removed by a syringe.

Can dog food cause urinary problems? ›

High levels of certain minerals in dog food can increase the chance of crystal formation in urine. Magnesium and phosphate are mineral components of the most common crystal type struvite. Don't feed a dog food with excessive amounts of these minerals. The dog food your dog eats also influences urine acidity (pH).

Can I give my dog anything over the counter for a UTI? ›

Even if you have medication at home for human UTIs, do not give it to your dog. Human medications are toxic to animals. If you suspect that your pet pal is suffering from a UTI, contact your vet. In some situations, your vet will want to perform a urinalysis to test for bacteria, crystals, and abnormal blood cells.

What does apple cider vinegar do for dogs with UTI? ›

One of the most useful materials you can keep around the house, apple cider vinegar is a natural antiseptic and antibacterial agent. Adding one to two tablespoons of apple cider vinegar to your dog's water twice a day for ten days can alleviate symptoms and reduce pain caused by a UTI.

What does a UTI look like in dogs? ›

Dogs with UTIs generally attempt to urinate very frequently whenever they go outside. They also may strain to urinate, or cry out or whine when urinating if it is painful. Sometimes you might even see blood in their urine. Dripping urine, or frequent licking of the genitals, may also signal that a UTI is present.

What is the strongest natural antibiotic for UTI? ›

Cranberry juice is one of the most well-established natural treatments for UTIs. People also use it to clear other infections and speed wound recovery. 2020 research into the effectiveness of cranberries for UTIs has found it to be effective.

What can I give my dog for a UTI at home? ›

Cranberries and blueberries are fruits that you can add to your dog's diet to support their urinary tract. Many high-quality dog foods will contain these ingredients already. Apple cider vinegar can be added to your dog's water bowl in small amounts and may ward off infection.

Can UTI in dogs heal on its own? ›

Can a dog's bladder infection go away on its own? Although in some cases bladder infections in people clear up without the need for medical care, this is unlikely to be true for your dog.

How can you tell if a dog has kidney problems? ›

What Are Some Signs of Kidney Disease in Dogs?
  • Drinking more or less water.
  • Change in volume and frequency of urination.
  • Loss of interest in playing or interacting.
  • Decreased appetite.
  • Vomiting or diarrhea.
  • Unexplained weight loss.
  • Blood in urine.
  • Signs of dental disease like pale gums, smelly breath, mouth ulcers.
Feb 13, 2021

Are red blood cells in urine serious? ›

Having blood in your urine usually isn't serious. But in some cases, red or white blood cells in your urine may mean that you have a medical condition that needs treatment, such as a urinary tract infection (UTI), kidney disease, or liver disease.


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