Cat Symptoms Guide

Understand your cat's symptoms, know when to worry, and learn what to do. Every symptom page includes severity ratings, home care tips, and when to see the vet.

🚨 When to Go to the Emergency Vet

Seek immediate emergency care if your cat shows any of these symptoms:

  • • Straining to urinate or unable to urinate (especially male cats)
  • • Difficulty breathing or open-mouth breathing
  • • Ingestion of toxic substances (lilies, antifreeze, medications)
  • • Seizures or sudden collapse
  • • Uncontrolled bleeding or severe trauma
  • • Inability to stand or sudden paralysis
  • • Vomiting blood or producing bloody diarrhea
  • • Complete loss of appetite for more than 48 hours
🚨 Emergency⚠️ Vet Soon👁️ Monitor🏠 Home Care

🍽️ Digestive Symptoms

Cat Vomiting After Eating👁️ MonitorCat Vomiting White Foam👁️ MonitorBlood in Cat Stool⚠️ Vet SoonCat Drooling: Causes & Concerns👁️ Monitor

🚽 Urinary Symptoms

Blood in Cat Urine⚠️ Vet SoonCat Urinary Blockage🚨 Emergency

🧠 Behavioral & General

Cat Drooling Excessively👁️ Monitor

Why Cat Symptoms Are Easy to Miss

Cats are masters at hiding illness — it's an instinct inherited from their wild ancestors. In the wild, showing weakness made a cat vulnerable to predators, so they evolved to mask pain and discomfort. This means that by the time you notice something is wrong, the problem may have been developing for days or even weeks.

Subtle Signs Your Cat May Be Sick

  • Hiding more than usual — cats often retreat to closets, under beds, or other secluded areas when they feel unwell
  • Changes in grooming — over-grooming (leading to bald patches) or under-grooming (greasy, matted fur) both signal problems
  • Altered eating or drinking — eating less, eating more, drinking more water than usual, or ignoring treats they normally love
  • Litter box changes — going more or less frequently, straining, urinating outside the box, or changes in stool consistency
  • Behavioral shifts — a normally social cat becoming withdrawn, or a normally calm cat becoming aggressive or vocal
  • Weight changes — gradual weight loss is easy to miss, especially in long-haired cats

Regular veterinary check-ups (at least once a year for healthy cats, twice a year for senior cats over 7) are essential because your vet can detect problems through blood work and physical examination that you wouldn't notice at home.

Male Cat Urinary Emergencies

The single most dangerous symptom in male cats is inability to urinate. Male cats have a narrow urethra that can become blocked by crystals, mucus plugs, or stones. A urinary blockage prevents the cat from emptying their bladder, causing toxins to build up in the bloodstream.

Warning Signs

  • • Frequent trips to the litter box with little or no urine
  • • Crying or vocalizing while trying to urinate
  • • Licking the genital area excessively
  • • Blood in urine
  • • Vomiting and lethargy (late-stage sign)

Timeline

  • • 0-12 hours: Discomfort, frequent litter box trips
  • • 12-24 hours: Pain increases, may start vomiting
  • • 24-48 hours: Kidney damage begins, toxins build up
  • • 48-72 hours: Can be fatal without treatment

Frequently Asked Questions

How do I know if my cat is sick?+
Watch for changes in appetite, water intake, litter box habits, grooming, energy level, and behavior. Cats hide illness well, so subtle changes like hiding more, grooming less, or eating less can indicate a problem. Any sudden change in behavior warrants a vet call.
When should I take my cat to the emergency vet?+
Emergencies include: inability to urinate (especially male cats), difficulty breathing, ingestion of toxic substances, seizures, uncontrolled bleeding, sudden paralysis, and vomiting blood. A male cat that cannot urinate needs immediate emergency care — this can be fatal within 24-48 hours.
Why is my cat vomiting?+
Occasional vomiting (once or twice a month) can be normal from hairballs or eating too fast. Frequent vomiting, vomiting blood, or vomiting with lethargy or diarrhea needs veterinary attention. Chronic vomiting may indicate IBD, food allergies, kidney disease, or hyperthyroidism.
What does blood in cat urine mean?+
Blood in cat urine commonly results from FLUTD, UTIs, bladder stones, or stress cystitis. In male cats, blood with straining is potentially an emergency urinary blockage. Always see your vet if you notice blood in your cat's urine.
Why is my cat drooling excessively?+
The most common medical cause is dental disease, affecting 70%+ of cats over 3 years old. Other causes include nausea, foreign objects in the mouth, or toxic plant exposure. Some cats drool normally when happy and purring — this is harmless.

Prevention Starts with Regular Grooming

Professional cat groomers catch skin issues, lumps, parasites, and other health problems early — before they become serious.

Find a Cat Groomer Near You