Cats hide illness, so urgency tables matter more for cats than for dogs. This is an educational reference, not a diagnosis — when two symptoms combine or your instinct says wrong, the phone call is free.
| Symptom | Urgency | Likely causes | What to do |
|---|---|---|---|
| Straining to urinate / crying in litter box | 🚨 EMERGENCY | Urethral blockage (esp. male cats), Stones (uroliths), Cystitis | ER now — a blocked cat can die within hours; do not wait to see if it passes. |
| Difficulty breathing / open-mouth breathing | 🚨 EMERGENCY | Heart failure, Asthma attack, Trauma | ER immediately; handle gently — stress worsens respiratory distress. |
| Not eating (over 24 hours) | 🚨 EMERGENCY | Hepatic lipidosis risk, Dental pain, Kidney disease, Nausea | Vet today — cats break down fat dangerously fast when fasting; 24h is the limit. |
| Lily exposure (any part, incl. vase water) | 🚨 EMERGENCY | Lily nephrotoxicity | ER + Poison Control (888) 426-4435 — severe kidney injury can follow even tiny ingestions (Merck). |
| Seizures or collapse | 🚨 EMERGENCY | Toxin, Epilepsy, Metabolic disease | Keep hands away from the mouth, dim lights, note duration; ER after any first seizure. |
| Pale / white / blue gums | 🚨 EMERGENCY | Blood loss, Anemia, Poor circulation | ER now — press a gum and check refill under 2 seconds as context. |
| Suspected poisoning | 🚨 EMERGENCY | Human meds, Permethrin (dog flea product), Antifreeze, Toxic plants | ASPCA Poison Control (888) 426-4435 + your vet; bring the packaging. |
| Swallowed string / linear object | 🚨 EMERGENCY | Linear foreign body — saws through intestine | Do NOT pull any visible string; ER imaging and likely endoscopy/surgery. |
| Repeated vomiting | ⏰ 24 HOURS | Dietary indiscretion, Foreign body, Kidney disease, Hyperthyroidism | Keep water available (withholding water worsens dehydration — Merck); vet within 24h or sooner with blood in vomit. |
| Diarrhea over 24–48h | ⏰ 24 HOURS | Diet change, Parasites, Infection | Vet visit; bring a fresh stool sample if possible. |
| Blood in urine / around box | ⏰ 24 HOURS | Cystitis, Stones, Clots | Vet within 24h — earlier for males (blockage risk). |
| Excessive thirst + big urine clumps | ⏰ 24 HOURS | Chronic kidney disease, Diabetes, Hyperthyroidism | Vet visit with bloodwork — early detection changes the kidney-disease trajectory. |
| Sudden weight loss (eating normally) | ⏰ 24 HOURS | Hyperthyroidism, Diabetes, Malabsorption | Vet visit — a cat losing weight while eating well is a classic endocrine case. |
| Coughing or wheezing | ⏰ 24 HOURS | Feline asthma, Respiratory infection, Hairballs (occasionally) | Vet visit; film it on your phone — coughing vs vomiting is hard to describe. |
| Limping without swelling | ⏰ 24 HOURS | Soft-tissue injury, Early arthritis, Fracture | Vet if not improving in 24h; restrict jumping meanwhile. |
| Eye discharge / squinting | ⏰ 24 HOURS | Conjunctivitis, Herpes flare, Corneal ulcer | Vet visit — eye ulcers worsen fast without treatment. |
| Bad breath / drooling | ⏰ 24 HOURS | Dental disease, Gingivostomatitis, Oral foreign body | Dental check — cats develop resorptive lesions that are genuinely painful. |
| Overgrooming / bald patches | 👀 WATCH | Fleas, Allergies, Stress overgrooming | Flea treatment first (all pets in home), then vet if pattern continues. |
| Occasional sneezing, bright and eating | 👀 WATCH | Mild URI, Dust/irritant | Monitor; escalate if discharge thickens, appetite drops, or breathing changes. |
| Hiding more than usual | 👀 WATCH | Pain, Stress, Early illness | Cats hide sickness — if hiding comes with appetite or litter-box changes, treat as a 24h vet call. |
Your veterinarian, or the ASPCA Animal Poison Control Center: (888) 426-4435 (24/7, consultation fee applies). Suspected poisoning is always a phone call. Educational reference, not diagnosis.