How to Tell If Your Cat Has a Urinary Tract Infection (UTI)

checklist Symptoms to Watch For

Cats are masters at hiding illness, but urinary tract issues produce behavioral changes that are hard to miss once you know what to look for:

• check_circleFrequent trips to the litter box with little or no urine produced — the classic straining posture, often mistaken for constipation
• check_circleVocalizing or crying while urinating — indicates pain or burning
• check_circleBlood in the urine (hematuria) — may appear as pink-tinged clumps in clumping litter or visible red spots
• check_circleUrinating outside the litter box — especially on cool, smooth surfaces like tile, bathtubs, or sinks. This is often a cat's way of telling you something hurts
• check_circleExcessive licking of the genital area — a response to irritation and discomfort
• check_circleStrong or foul-smelling urine
• check_circleLethargy, hiding, or decreased appetite — signs that the condition may be becoming systemic
• check_circleInability to urinate at all — this is a urethral obstruction, a life-threatening emergency that kills cats within 24–48 hours

search Possible Causes

What looks like a UTI may actually fall under the broader umbrella of feline lower urinary tract disease (FLUTD). The possible causes include:

• check_circleIdiopathic cystitis (FIC) — the most common cause of urinary signs in cats under 10 years old. Feline idiopathic cystitis is a sterile (non-bacterial) inflammation of the bladder triggered by stress. It accounts for roughly 60–70% of FLUTD cases.
• check_circleBacterial urinary tract infection — more common in older cats (over 10 years), cats with diabetes or kidney disease, and cats that have had urinary catheters. E. coli is the most frequently isolated bacteria.
• check_circleUrinary crystals or bladder stones (uroliths) — struvite and calcium oxalate crystals can irritate the bladder lining and, more dangerously, form plugs that obstruct the urethra. Male cats are at much higher risk of urethral obstruction because their urethra is narrower.
• check_circleUrethral plugs — a combination of crystals, inflammatory debris, and mucus that can block the urethra entirely. This is a true emergency.
• check_circleBladder tumors — rare, but transitional cell carcinoma can occur, particularly in older cats.
• check_circleAnatomic abnormalities — congenital defects or scar tissue from previous trauma or surgery.

home Home Care Tips

Urinary tract issues are not conditions where extensive home care is appropriate before diagnosis — the risks are too high. However, there are things you can do once a vet has evaluated your cat, and preventive measures for cats prone to urinary issues:

• check_circleIncrease water intake — this is the single most important preventive measure. Feed wet food instead of (or in addition to) dry kibble. Provide multiple fresh water sources and consider a cat water fountain, as many cats prefer moving water.
• check_circleAdd water to food — even wet food can have extra water mixed in to increase hydration.
• check_circleReduce stress — since stress is a primary trigger for FIC, maintain a predictable routine, provide vertical space (cat trees, shelves), offer hiding spots, and use feline pheromone diffusers. Enrich the environment with puzzle feeders and regular play sessions.
• check_circleKeep litter boxes pristine — provide one more litter box than the number of cats in your home, scoop daily, and deep-clean weekly. Place boxes in quiet, accessible locations.
• check_circleFeed a veterinary urinary diet if prescribed — these diets are formulated to manage urine pH and reduce crystal formation. Do not switch away from them without veterinary guidance.

local_hospital When to See a Vet

Some urinary signs are an emergency — others can wait for a next-day appointment. Here is how to tell the difference:

Emergency — go to the vet immediately:

• check_circleYour cat is straining but producing no urine at all — this is a urethral obstruction. Death can occur within 24 hours.
• check_circleYour cat is vocalizing in obvious distress
• check_circleYour cat is lethargic, vomiting, or collapsed — signs of a ruptured bladder or uremic toxicity
• check_circleYou can feel a firm, distended bladder (like a tennis ball in the lower abdomen)

Urgent — see the vet within 24 hours:

• check_circleBlood in the urine without obstruction
• check_circleFrequent, small-volume urination
• check_circleUrinating outside the litter box (new behavior)
• check_circleAny combination of the above plus reduced appetite or hiding