Rabbit Urinary Blockage Emergency: Straining, No Pee, and Pain

A rabbit with little or no urine output may be dealing with a true urethral obstruction, a bladder packed with thick sludge, a stone, severe inflammation, or another painful urinary condition. Any of these can cause intense discomfort. They can also trigger secondary problems that rabbits handle poorly, especially dehydration and gastrointestinal stasis.

Rabbits often hide illness until they are very uncomfortable. By the time a pet parent notices repeated straining, a hunched posture, or no urine in the litter area, the rabbit may already be in significant pain. Merck and VCA both emphasize that urinary mineral deposits, stones, and sludge are common rabbit urinary problems and that prompt veterinary evaluation is needed when straining or bloody urine appears.

Your vet may consider bladder stones, urethral stones, bladder sludge, urinary tract infection, inflammation of the bladder, kidney disease, dehydration, reduced mobility, obesity, or less commonly neurologic disease. VCA also notes that bacterial infection and kidney effects from Encephalitozoon cuniculi can contribute to sludge formation in some rabbits.

Diet can play a role, but it is rarely the whole story. Rabbits normally excrete calcium through the urine, so some cloudy urine can be normal. Problems develop when mineral material becomes excessive, thick, irritating, or forms stones. Low water intake, inactivity, obesity, and underlying disease can all increase risk.

Transport your rabbit as calmly as possible. Use a secure carrier lined with towels or fleece. Keep the environment quiet and avoid overheating. If your rabbit is still interested in food, you can offer familiar wet leafy greens or hay during transport, but do not delay the trip to encourage eating.

Do not give human pain medicines. Do not press on the abdomen to check the bladder. Do not assume this is constipation or a minor litter box issue. If your rabbit has stopped eating, seems weak, or has not produced urine, tell the hospital that this is a rabbit emergency with possible urinary obstruction.

Your vet will usually start with a physical exam, hydration assessment, pain assessment, and abdominal palpation. In some rabbits, stones or a gritty sludge-filled bladder can be felt. Abdominal radiographs are commonly used because calcium-based stones and heavy sludge are often visible on X-rays. Your vet may also recommend urinalysis and bloodwork to look for infection, kidney changes, dehydration, or electrolyte problems.

In more complex cases, your vet may discuss ultrasound, sedation, or catheterization. The exact plan depends on whether your rabbit is stable, whether the blockage seems complete, and whether there are signs of concurrent GI stasis.

Treatment depends on the cause, how blocked the rabbit is, and how sick the rabbit feels overall. Conservative care may include pain control, fluids, assisted feeding if needed, urinalysis, and imaging, with a typical US cost range of about $250 to $700 for an urgent visit and initial stabilization. Standard care for suspected obstruction or severe sludge often includes radiographs, injectable medications, hospitalization, bladder decompression or catheterization when appropriate, and monitoring, often totaling about $700 to $1,800.

Advanced care may include repeat imaging, bloodwork, anesthesia, surgery such as cystotomy to remove stones, or referral-level hospitalization. In many US practices, that cost range is roughly $1,800 to $4,500 or more depending on region, after-hours timing, and complications. The right option is the one that matches your rabbit's medical needs, your vet's findings, and your family's goals.

Some rabbits improve quickly once pain is controlled and urine can pass again. Others need several days of hospitalization, especially if they are dehydrated, have stopped eating, or need surgery. Recurrence is possible, so follow-up matters.

Your vet may talk with you about hydration support, diet review, exercise, litter box setup, weight management, and repeat imaging or urine checks. These steps do not guarantee the problem will not return, but they can help reduce risk and catch changes earlier.