Why is My Cat Peeing White Foam?

If you’ve noticed your cat peeing white foam, you may be wondering what could be causing this unusual behavior. It’s important to understand that this symptom can be indicative of several potential underlying issues. Here, we will explore some possible reasons why your cat might be peeing white foam and provide insights on what you can do to address the problem.

Urinary Tract Infection

A common reason for a cat to pee white foam is a urinary tract infection (UTI). UTIs can occur due to bacterial or fungal infections in the urinary system, causing discomfort and inflammation. Cats with UTIs may experience difficulty and pain while urinating, leading to the production of foam.

Here are some signs that your cat could be suffering from a UTI:

  • Frequent urination
  • Straining to urinate
  • Presence of blood in urine
  • Crying or meowing during urination
  • Excessive licking of the genital area

If you suspect your cat has a UTI, it is crucial to consult a veterinarian for a proper diagnosis and treatment plan. They may prescribe antibiotics or other medications to alleviate the infection and manage your cat’s symptoms.

Bladder Stones or Crystals

Another potential cause of white foam in your cat’s urine could be the presence of bladder stones or crystals. These solid particles form due to minerals accumulating in the bladder, irritating the urinary tract. As a result, your cat may produce foam while urinating.

Indications that your cat may have bladder stones or crystals include:

  • Visible blood in the urine
  • Straining or crying during urination
  • Frequent urination in small amounts
  • Urinating outside the litter box
  • Licking the genital area more than usual

Your veterinarian will conduct tests, such as urine analysis and imaging, to confirm the presence of bladder stones or crystals. Treatment typically involves the removal of these obstructions through techniques such as surgery or dietary modifications.

Behavioral Issues

Stress, anxiety, or changes in the cat’s environment can also contribute to peeing white foam. Cats are sensitive creatures, and disruptions in their routine or living conditions can lead to behavioral problems.

Some signs that your cat’s peeing may be due to behavioral issues include:

  • Urinating in unusual places
  • Urinating more frequently, but in smaller amounts
  • Excessive grooming or licking
  • Changes in appetite or weight loss
  • Restlessness or hiding behavior

To address behavioral concerns, try to identify any changes in your cat’s environment that could be causing stress. Provide ample litter boxes in quiet areas, engage in interactive play, and create a calm and secure space for your cat. If the behavior persists, consult with a veterinarian or a feline behaviorist for further guidance.


In some cases, dehydration can cause your cat’s urine to appear foamy or discolored. Insufficient water intake can concentrate the urine, leading to foam formation.

You can check for signs of dehydration in your cat, which may include:

  • Dry gums
  • Lethargy or weakness
  • Loss of appetite
  • Increased heart rate
  • Poor skin elasticity

Encourage your cat to drink more water by providing fresh water sources and possibly even a cat fountain. If you suspect dehydration, consult with a veterinarian for proper evaluation and guidance to rehydrate your cat.

Miscellaneous Health Issues

Some other health conditions could potentially lead to white foam in a cat’s urine. These may include:

Health ConditionSigns and Symptoms
Kidney DiseaseIncreased thirst, weight loss, vomiting, decreased appetite
DiabetesExcessive thirst, frequent urination, weight loss, increased appetite
Lower Urinary Tract DiseaseStraining to urinate, blood in urine, discomfort

If you suspect your cat may be suffering from any of these conditions, it is crucial to seek veterinary assistance promptly for proper diagnosis and treatment.

In conclusion, if you notice your cat peeing white foam, it is essential to monitor their behavior and seek professional help. While the underlying cause can range from urinary tract infections to behavioral issues, a veterinarian’s expertise is vital to diagnose the specific issue and develop an appropriate treatment plan. Remember, addressing this issue promptly can help ensure your cat’s well-being and prevent any potential complications.