Cat symptom
Straining to urinate / can't pee in cats
Straining, crying, frequent tiny amounts, or producing no urine. A blocked urethra can become life-threatening quickly; male cats are especially high-risk, but any pet that cannot pass urine needs emergency care.
Common causes of straining to urinate / can't pee in cats
- Urethral blockage (a true emergency, especially in male cats, but possible in dogs too)
- Urinary tract infection or inflammation (cystitis/FLUTD)
- Bladder stones or crystals
- Stress-related bladder inflammation in cats
Who's most at risk
- Male cats — a narrow urethra blocks easily (true emergency)
- Cats on dry-only diets or with low water intake
- Overweight, indoor, or stressed cats
- Pets with a history of bladder stones or crystals
What you can do at home
- There is no safe home treatment — this needs a vet right away
- If your pet cannot pass urine, treat it as an emergency and go now
- Keep them calm and warm on the way to the clinic
When to see a vet
- Straining with little or no urine coming out (go immediately)
- Crying out, a tense/painful belly, vomiting, or collapse
- Blood in the urine or frequent trips with only a few drops
When it's more serious
- An inability to pass urine is an emergency in any pet — go to a vet or ER now.
- A straining male cat may be blocked — this is life-threatening within hours. Go immediately.
- These signs suggest a dangerous blockage or toxin build-up — seek emergency care.
What your vet may do
- Feel the bladder to check whether it's distended
- Urinalysis, and often bloodwork to assess kidneys and electrolytes
- X-rays or ultrasound to look for stones or crystals
- Relieve a blockage (often sedation + catheter) and give IV fluids
Questions to ask your vet
- Is the bladder blocked, and does it need relieving now?
- Are the kidneys or potassium levels affected?
- How do we prevent this — diet, water intake, stress?
- What home signs mean another emergency?
Frequently asked questions
What causes straining to urinate / can't pee in cats?
Straining, crying, frequent tiny amounts, or producing no urine. A blocked urethra can become life-threatening quickly; male cats are especially high-risk, but any pet that cannot pass urine needs emergency care. Common causes include: Urethral blockage (a true emergency, especially in male cats, but possible in dogs too); Urinary tract infection or inflammation (cystitis/FLUTD); Bladder stones or crystals; Stress-related bladder inflammation in cats.
Is straining to urinate / can't pee in cats an emergency?
Emergency — get veterinary help right now. See a vet right away if: Straining with little or no urine coming out (go immediately); Crying out, a tense/painful belly, vomiting, or collapse; Blood in the urine or frequent trips with only a few drops.
What can I do at home for a cat with straining to urinate / can't pee?
There is no safe home treatment — this needs a vet right away If your pet cannot pass urine, treat it as an emergency and go now Keep them calm and warm on the way to the clinic
Sources
Related reading from Webvet
Reviewed by the Webvet Veterinarian Team
This guide is general information, not a diagnosis, and does not replace an exam by your veterinarian. If your pet is in distress, contact your vet or an emergency clinic right away.