Blocked Bladders in Pets – A Life-Threatening Emergency
One of the most serious and time-critical emergencies we see at Pittwater Animal Hospital is a blocked bladder, especially in male cats. This condition can become fatal in a matter of hours if left untreated.
🚨 What Is a Blocked Bladder?
A blocked bladder means your pet cannot pass urine. In male cats, this is most often due to:
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Inflammation in the bladder that forms a soft plug
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Crystals in the urine that clump together and cause a physical blockage
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Scarring from previous urinary issues
Because male cats have a very narrow urethra—only 2–3mm wide—it doesn’t take much for it to become blocked.
Once the bladder is full and urine can’t escape, the kidneys stop working, potassium levels rise dangerously, and the animal quickly progresses to renal failure.
🐱 What Are the Signs in Male Cats?
Early signs may include:
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Frequent trips to the litter tray
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Straining to urinate with little to no urine passed
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Vocalising while urinating
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Licking at the genitals
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Hiding or becoming withdrawn
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Sitting in unusual postures (like upright on their bottom)
These signs are never normal—even if some urine is still passing, your cat may still be partially blocked. Call us immediately.
🏥 Why Treatment Is Challenging
Treating a blocked cat involves:
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Immediate stabilisation
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Sedation or anaesthetic to place a urinary catheter
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Several days of intensive hospital care, IV fluids, and pain relief
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Close monitoring to ensure the cat can urinate on its own again
Even after successful treatment, re-blocking is common—sometimes within days of discharge.
At Pittwater Animal Hospital, we’ve managed hundreds of blocked cats and know how critical and complex these cases can be. We do everything possible to achieve the best outcome while supporting you through the process.
🐶 What About Male Dogs?
Male dogs can also suffer from urinary blockages, especially due to bladder stones (uroliths). These may pass down the urethra but get stuck at the base of the os penis (a bone in the penis), where the passage narrows. This causes inflammation, pressure, and pain—and like cats, requires immediate treatment.
💬 What Should You Do?
If you suspect your pet is having trouble urinating, don’t wait. Blocked bladders are life-threatening, but with fast veterinary care, we can often save your pet and relieve their pain.
📞 Call us now on 9913 7979
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Make an Appointment with the Vet →
📝 Read about Finn the Cat’s Blocked Bladder and how we helped him recover.
