Symptom · Cats
Cat straining to pee: what it means and when to call the vet
A cat that is straining in the litter tray and producing little or no urine may have a blocked urethra. It is an emergency — especially in male cats — and can be fatal within a day or two. Go to a vet now.
By Maya HartCommon causes
- Urethral blockage by crystals or a plug of mucus (mostly male cats)
- Feline idiopathic cystitis — inflammation linked to stress
- Bladder stones
- Urinary infection (more common in older cats)
What you can do at home
- Do not wait to see if it passes — call a vet now
- Once treated, feed the diet your vet recommends and encourage drinking
What the vet may do
- Unblock the urethra under sedation or anaesthesia
- Fluids and pain relief
- Urine tests and imaging for crystals and stones
- A special diet to dissolve or prevent crystals
Prevention
- Wet food and water fountains increase drinking
- Keep litter trays clean — one per cat plus one
- Reduce stress: stable routines, hiding places
The details
Male cats have a long, narrow urethra that can be plugged by crystals or inflammatory material. When urine cannot get out, waste products and potassium build up in the blood and can stop the heart. From the outside it can look like constipation, so any cat straining in the tray should be treated as urinary until proven otherwise.
Questions owners ask
Is cat straining to pee an emergency?
Yes — treat it as an emergency and go to a vet now. Go now if you see: straining with little or no urine passing; crying or licking the genitals; vomiting, hiding or collapse; any male cat making repeated trips to the tray.
What causes cat straining to pee?
Urethral blockage by crystals or a plug of mucus (mostly male cats); Feline idiopathic cystitis — inflammation linked to stress; Bladder stones; Urinary infection (more common in older cats).
What can I do at home?
Do not wait to see if it passes — call a vet now. Once treated, feed the diet your vet recommends and encourage drinking.
Sources
Tailwise is for general information and is reviewed by veterinary professionals, but it is not a substitute for advice from your own vet, who knows your pet. How we check facts