Rabbit Urine: What Pee Tells You About A Rabbit’s Health

The pee in your rabbit’s litterbox may seem like just a smelly nuisance, but this yellow liquid actually provides a window into your bunny’s health. Your rabbit’s urine contains a wealth of information about their hydration status, kidney and bladder function, potential diseases, and more. Like a coded message, subtle changes in the color, consistency, and composition of your rabbit’s pee can signal brewing trouble and help you catch problems early. Join us as we break down the meaning behind red, orange, cloudy, and other unusual urine colors in rabbits. With this urine color chart as your guide, you’ll gain valuable insights to monitor your rabbit’s wellbeing and quickly address the health conditions pee can reveal.

Color of rabbit urine

The color of a rabbit's urine can provide important clues about their health and wellbeing. Normal rabbit urine ranges from yellow to amber in color. This indicates that the rabbit is properly hydrated and the kidneys are concentrating the urine as they should.

Deviations from the normal yellow or amber color can signify issues including dehydration, urinary tract infections, kidney problems, and more. Owners should monitor the urine color of their rabbits and watch for any changes, as discolored urine is often the first sign of an underlying problem.

Some of the urine colors to watch out for include dark yellow, orange, red, brown, cloudy white, and others. Each unusual urine color points to specific health conditions that require veterinary attention. With prompt care and treatment, many urine-related issues can be resolved before they become more serious.

Rabbit Urine Color Chart

Here is a quick reference urine color chart for rabbit owners:

Yellow to amber – Normal, healthy urine
Pale yellow to clear – Overly dilute urine indicating dehydration
Dark yellow- Concentrated urine indicating dehydration
Orange – May indicate dehydration, kidney issues, or bladder sludge
Red or pink – Blood in the urine signaling UTI or bladder/kidney issues
Brown – Liver issues, dehydration, potentially life threatening
Milky white – Bladder sludge or infection
Green – Bile indicating liver issue or blockage
Black – Potentially dried blood from trauma or cancer

This urine color guide provides a starting point for understanding what different urine colors may mean. However, it's important to have any significant change in urine color checked by a rabbit-savvy veterinarian to determine the underlying cause.

Red pee — when is it bad?

Red or pink urine in rabbits is always an abnormal finding that requires veterinary attention. Red pee indicates the presence of blood in the urine, known medically as hematuria. There are several possible causes of bloody rabbit urine, most of which signal a serious health problem.

Potential causes of red or bloody rabbit pee include:

  • Urinary tract infection – The most common cause, requires antibiotics.

  • Bladder or kidney stones – Mineral deposits that cause irritation, pain, and bleeding.

  • Kidney disease – Can lead to dysfunction and bleeding into the urinary tract.

  • Bladder or kidney cancer – Cancerous tissues can ulcerate and bleed.

  • Uterine cancer – Advanced uterine cancer may spread to the bladder.

  • Trauma – Bladder or urinary tract injury from a fall, bite, or other trauma.

  • Blood clotting disorder – Disorders like hemophilia can lead to excessive bleeding.

  • Medications – Certain drugs like blood thinners can cause urinary bleeding.

  • Diet – Excess calcium or oxalates in the diet can contribute to stone formation.

Rabbits exhibiting any amount of red in their urine should be evaluated promptly. Depending on the underlying cause, treatment may include antibiotics, anti-inflammatories, surgery, or other therapies. Left untreated, bloody urine can lead to dehydration, urinary obstruction, kidney damage, and worsening infection.

Orange or brown urine

Orange or brown colored urine in rabbits is always an abnormal finding requiring veterinary examination. Potential causes include:

  • Dehydration – Concentrated urine due to inadequate fluid intake.

  • Kidney disease – Can cause buildup of waste products tinting urine orange.

  • Liver disease – Impairs waste excretion leading to orange/brown urine.

  • Bladder sludge – Thick sediment can give urine an orange tint.

  • Cancer – Tumors of the bladder, kidneys or liver may discolor urine.

  • Medications – Antibiotics like doxycycline can turn urine orange.

  • Diet – Carrots, beet tops, kale and other foods may temporarily tint urine.

  • Dried urine – Older sludgy urine in the bladder may appear brown or orange.

Orange or brown urine indicates concentrated urine, excess waste products, or the presence of blood, bile or other pigments. Dehydration is a common cause in rabbits. More serious origins like liver or kidney dysfunction must be ruled out with diagnostic testing.

Treatment depends on the underlying cause. Fluid therapy, diet change, pain control and surgical intervention may be necessary based on exam findings. Owners should seek prompt veterinary care if their rabbit's urine becomes orange or brown.

White or milky urine

The appearance of white or milky looking urine in a rabbit is always an abnormal finding requiring veterinary investigation. Several conditions can cause this urine discoloration, including:

  • Bladder sludge – Thick sediment that makes urine appear cloudy or milky.

  • Bladder infection – Pus and inflammation due to a bacterial infection.

  • Kidney infection – Bacteria moving up to infect the kidneys.

  • Kidney stones – Small stones irritating the urinary tract.

  • Cancer – Advanced bladder or kidney cancer eroding tissue.

  • Diet – Excess calcium or compounding issues with diet.

  • Dehydration – Concentrated urine may take on a cloudy appearance.

  • Medications – Certain drugs can turn urine milky.

  • Genetics – Some rabbit breeds prone to milky urine.

The most common cause of milky or creamy urine in rabbits is bladder sludge. This refers to a thick sediment buildup in the bladder from mineral precipitates, cell debris and crystals. It is often diet related.

Any rabbit with white, cloudy or milky urine needs to see a rabbit vet promptly. Diagnostics like urinalysis, urine culture, bloodwork and imaging will be needed to determine the underlying problem. Based on the cause found, treatment may include antibiotics, diet change, surgery or other interventions.

Bladder sludge and bladder stones

Bladder sludge refers to a thick, gritty sediment that can form in the bottom of a rabbit's bladder. It consists of mineral precipitates, cellular debris, and tiny crystal aggregates suspended within the urine. Over time, sludge can aggregate into larger bladder stones.

Signs of bladder sludge and bladder stones

Rabbits with bladder sludge or stones may show these signs:

  • Changes in urine color – Milky, cloudy, orange tinged
  • Blood in the urine
  • Straining or difficulty urinating
  • Small, frequent urinations
  • Accidents outside the litterbox
  • Painful urination indicated by crying out
  • Licking the genitals frequently
  • Loss of appetite and weight loss

Bladder sludge and stones can irritate the bladder lining and urethra, causing discomfort, bleeding, and urinary blockages. Rabbits attempting to pass sludge or stones may exhibit signs of pain and irritation around their belly and genitals.


Factors that contribute to bladder sludge and stone formation include:

  • Diet – Excess calcium, oxalates, or decreased water intake.
  • Breed – Smaller rabbits prone to sludge issues.
  • Obesity – Excess weight strains the urinary tract.
  • Gender – Unspayed females at higher risk.
  • Environment – Lack of exercise and activity.
  • Medical conditions – UTIs, diabetes, other factors.
  • Medications – Certain drugs like steroids may increase risk.
  • Genetics and anatomy – Some rabbits predisposed.

Sludge develops when the chemical balance of the urine becomes supersaturated with stone-forming minerals. This causes the minerals to precipitate out and accumulate as sediment.


Suggested ways to help prevent bladder sludge and stones include:

  • Encourage plentiful water intake.
  • Feed grass hay based diet, limit pellets.
  • Increase exercise and activity.
  • Maintain normal weight.
  • Address medical issues like UTIs promptly.
  • Limit calcium-rich foods and oxalates.
  • Add water to fresh veggies to increase moisture.
  • Offer cranberry extract to acidify urine.
  • Provide hay-filled litterbox to encourage grazing.
  • Have annual wellness exams to monitor for issues.

Rabbits with a history of bladder sludge or stones will need close monitoring and dietary management to try preventing recurrence. Annual urinalysis and x-rays are recommended to check for mineral buildup in at-risk rabbits.

Urinary Tract Infections in Rabbits

Urinary tract infections (UTIs) are relatively common in rabbits, especially middle-aged to older rabbits and unspayed females. UTIs occur when bacteria enter the urinary tract and colonize the bladder, causing an infection.

Signs of a UTI in rabbits

Symptoms of a possible UTI in rabbits include:

  • Changes in urine color – Red, brown, cloudy
  • Straining or crying out when urinating
  • Small, frequent urine deposits
  • Dribbling urine or wet genitals
  • Loss of bladder control or wet fur
  • Lethargy, reduced appetite
  • Fever, if infection spreads to kidneys

UTIs develop when bacteria gain access to the bladder through the urethra. Typical routes include ascending from the external genitalia, descending from the kidneys, or spreading via the bloodstream.

The most common bacteria implicated in rabbit UTIs are E. coli, Staphylococcus, Pasteurella, and Enterococcus species.


Factors that can increase a rabbit's risk of developing a UTI include:

  • Unspayed females – Hormonal changes influence UTIs.
  • Obesity – Excess weight strains the bladder.
  • Diabetes – Raises glucose levels in the urine.
  • Kidney disease – Impairs kidney filtration function.
  • Bladder stones – Can damage bladder wall and harbor bacteria.
  • Immune deficiency – Impairs the body's defenses.
  • Catheters and surgery – Can introduce bacteria into the urinary tract.
  • Cancer – Tumors may obstruct urine flow.
  • Anatomical anomalies – Can alter urinary tract function.


Suggested ways to help prevent UTIs in rabbits include:

  • Spaying females – Reduces hormone influence on UTIs
  • Encouraging water intake – Helps flush bacteria from bladder
  • Improve hygiene – Keep the genital region clean
  • Healthy diet – Support urinary tract health with optimal nutrition
  • Ideal weight – Avoid obesity which strains the bladder
  • Exercise – Promotes bladder muscle tone and emptying
  • Annual exams – Monitor for early signs of bladder or kidney issues
  • Prompt treatment – Resolve any suspected UTIs quickly

Any rabbit exhibiting potential UTI symptoms should be evaluated by a rabbit-experienced veterinarian. Urinalysis and urine culture are needed to definitively diagnose a UTI and identify the bacteria involved.

UTIs are readily treated with appropriate antibiotic selection and dosing. Follow up testing is important to confirm resolution. Recurrent UTIs may necessitate long-term antibiotic use in some rabbits.

Peeing outside of the litter box

There are several possible reasons why a rabbit may start urinating or spraying outside of its litter box:


  • Territory marking. Unneutered/unspayed rabbits may spray urine to mark territory, especially in the presence of other rabbits. Spaying/neutering typically resolves this cause of spraying.

Peeing on your bed

  • Claiming behavior. Rabbits may urinate on beds, furniture, etc. to mark it with their scent. This is a claim to that territory. Neutering, providing adequate exercise, and restricting access to off-limit areas can help curb this behavior.

Protesting a dirty litter box

  • Unsanitary conditions. Rabbits like to have clean latrines and will avoid a litter box that is not scooped regularly. Clean the litter box at least 1-2 times per day.

Is rabbit pee supposed to smell bad?

Normal rabbit urine should not have a particularly foul or strong odor. Some causes of smelly pee in rabbits include:

  • Dehydration – Concentrated urine has a stronger odor

  • Urinary tract infection – Bacteria multiply and alter urine odor

  • Bladder sludge – Thick mineral deposits emit an ammonia-like smell

  • Diabetes – Excess glucose in urine increases odor

  • Diet – Some foods like cruciferous veggies may change urine smell

  • Litter habits – Infrequent litter scooping allows smells to build up

  • Dental disease – Infected teeth or abscesses cause smelly urine

  • Cancer – Tumors of the bladder, urethra or kidneys can foul urine smell

  • Kidney disease – Impairs waste filtering leading to urine odor

Any significant or abnormal change in a rabbit's urine odor warrants further investigation. A veterinarian can check for signs of infection, metabolic issues, or other problems that may be causing urine to smell bad. Treating the underlying condition will help resolve smelly urine.

Is rabbit urine harmful to humans?

In general, healthy rabbit urine is not considered harmful to humans. However, exposure to rabbit urine carries some potential health risks including:

  • Bacteria – Rabbit urine may contain harmful bacteria like E. coli that can cause illness. Proper hygiene is important.

  • Parasites – Rabbits can pass parasite eggs like Encephalitozoon in their urine, which may infect humans if ingested.

  • Allergens – Proteins and compounds in rabbit urine can trigger allergic reactions in sensitive individuals. Severe asthma or anaphylaxis is possible with extensive contact.

  • Pregnancy concerns – A rabbit zoonotic disease called toxoplasmosis may be passed in urine and pose risks to pregnant women's unborn babies.

To reduce risks associated with rabbit urine, precautions include:

  • Wear gloves when cleaning litter boxes or handling soiled bedding.

  • Wash hands immediately after handling urine-soaked materials.

  • Avoid touching your face until hands are washed.

  • Pregnant women should avoid direct contact with litter boxes and urine.

  • Keep rabbit enclosures clean to avoid build up of urine.

  • Seek medical care if you develop flu-like symptoms after exposure.

With proper hygiene practices, most healthy people do not face significant hazards from ordinary rabbit urine exposure. But caution is warranted in pregnant women or those with compromised immunity. Consult a doctor with any concerns.


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