Cystitis, urinary stones, and urethral blockages are all part of feline lower urinary tract disease (FLUTD). Male cats in particular can develop life-threatening blockages within 24 hours. Know the signs.
Inflammation or stones irritating the bladder wall can cause blood in the urine. If the litter turns pink, act now.
Trying to urinate often but producing little or nothing is a hallmark of cystitis and should not be ignored.
Your cat may be avoiding the box because urination is painful. This is often a medical issue, not a behavior problem.
A sign of pain. Bladder inflammation or stones irritating the urethra can cause significant discomfort.
A urethral blockage is fatal within 24–48 hours, especially in male cats whose urethras are narrower. If your cat hasn't urinated in 12+ hours, go to an emergency vet immediately.
Cats try to soothe bladder or urethral discomfort by licking the area. Commonly seen alongside frequent urination attempts.
FLUTD is an umbrella term covering any condition affecting the bladder and urethra: cystitis, urinary stones, urethral plugs, and idiopathic (stress-related) cystitis.
The most common form is idiopathic cystitis — no identifiable cause other than stress. Moving home, a dirty litter box, multi-cat tension, and changes in routine can all trigger or worsen episodes.
Male cats have a longer and narrower urethra than females, making them far more prone to life-threatening blockages. If a male cat hasn't urinated in 12 hours or is straining with nothing coming out, contact an emergency vet clinic immediately — even in the middle of the night.
CatsMe's daily health log lets you track litter box visits, urine volume, and behavior — spotting subtle changes before they become emergencies. Use the app to build a record your vet can review at your next appointment.
Get Started FreeMild cases of idiopathic cystitis sometimes resolve within a few days, but recurrence is very common without addressing the underlying stress triggers. Blood in the urine always warrants a vet visit.
Increase water intake (add wet food, use a water fountain), keep litter boxes clean and accessible, reduce environmental stress, and consider a urinary-support diet if recommended by your vet.
Blood alone is concerning but not always immediately life-threatening. However, if blood in urine is combined with straining to urinate and lethargy — especially in a male cat — that combination indicates a possible blockage and is a genuine emergency.