Cat Emergency Warning Signs: When to Go to the Vet Now

By Tailwisp Editorial TeamUpdated October 20, 20264 min read

Cats are masters of hiding illness. In the wild, showing weakness invites predators, and domestic cats keep that instinct. By the time a cat looks obviously sick, the problem may be advanced. Knowing the real emergency signs, and acting on them, can save your cat's life.

Go to an emergency vet immediately if you see

Breathing problems

• Open-mouth breathing or panting at rest
• Fast, shallow or labored breathing, with the belly heaving
• Noisy breathing, wheezing or gasping
• Blue, gray or very pale gums or tongue
• Stretching the neck out while breathing

Cats do not pant like dogs, so any of these is serious.

Straining to urinate

Male cats are at particular risk of a urinary blockage. Signs include:

• Frequent trips to the litter box with little or no urine
• Straining, crying or licking the genital area
• Blood in the urine
• Vomiting, lethargy or hiding

A complete blockage can cause kidney failure and dangerous potassium levels within one to three days. It is an emergency in any cat but especially in males.

Collapse, seizures or sudden weakness

• Collapse or inability to stand
• Seizures, or twitching and loss of awareness
• Sudden paralysis of the back legs, often with severe pain and crying, which can be caused by a blood clot
• Stumbling, circling or head tilt that begins suddenly

Poisoning or toxic exposure

Anything that could be toxic is an emergency, even without signs. This includes lilies, antifreeze, human medications, rat poison and many plants and foods. See our guides on lilies and cats, toxic houseplants and chocolate toxicity.

Trauma and bleeding

• Falls from heights, car accidents and fights
• Bleeding that does not stop after a few minutes of pressure
• Deep wounds, bite wounds or open fractures
• A swollen or painful abdomen after an injury

Cats can seem fine after trauma and still have internal injuries, so get them checked.

Other emergencies

• Repeated vomiting or vomiting blood
• Diarrhea with blood, or severe diarrhea in a kitten
• Eye injuries, a swollen or bulging eye or sudden blindness
• Heatstroke: heavy panting, drooling, bright red gums and weakness
• Straining to give birth for more than an hour without a kitten
• Pale gums, with weakness, which can indicate anemia or blood loss
• A temperature above about 104 degrees Fahrenheit (40 C) or below about 99 degrees (37 C)

Call your vet the same day if you see

• Not eating for 24 hours or more
• Vomiting more than once or twice, or any vomiting with lethargy
• Drinking and urinating much more than usual
• Hiding, a sudden personality change or unusual aggression
• Limping, or reluctance to jump
• Weight loss, or a coat that suddenly looks unkempt
• Eye or nose discharge, sneezing or coughing that lasts more than a day or two
• Litter box changes, such as going outside the box or passing small, frequent urine

How to prepare for an emergency

• Know your nearest 24-hour hospital. Our US vet directory lists emergency options by state, and you should save the number in your phone.
• Keep a carrier handy. A hard-sided carrier that your cat is used to makes transport safer. See our guide to indoor cat enrichment for ways to make the carrier a comfortable space.
• Save the poison helpline numbers. The ASPCA Animal Poison Control Center and the Pet Poison Helpline answer 24 hours a day, and fees may apply.
• Budget for the unexpected. Emergency care can be costly. Our guide to cat vet costs explains what to expect and how to plan.
• Keep your cat's records. Know your cat's age, weight, medications, vaccinations and any chronic conditions.

What to do on the way

Call ahead so the clinic can prepare. Keep your cat warm and calm, with the carrier covered by a towel. Do not give human medications, which can be fatal. If your cat is bleeding, apply gentle pressure with a clean cloth. Drive carefully, and if possible have someone else drive while you watch your cat.

Special risks by age and sex

Kittens can deteriorate within hours because of their small size. Diarrhea, vomiting, refusing to nurse or eat, and a cold body feel are all reasons to call right away.

Male cats are most at risk of urinary blockage, so any change in urination, especially straining, needs fast attention.

Senior cats may hide signs of kidney disease, thyroid disease, diabetes or pain. Weight loss, thirst changes or reluctance to move deserve a prompt visit even when not a full emergency.

Outdoor cats face trauma, fights, abscesses and exposure to toxins such as antifreeze. After any fight, check for puncture wounds under the fur and watch for swelling, which signals an abscess.

How to check gum color and breathing at home

Lift your cat's lip and look at the gums. They should be pink, like the inside of your cheek, and when you press gently, the color should return within two seconds. White, blue, gray or bright red gums are warning signs. Count breaths while your cat is resting: a normal resting rate is roughly 20 to 30 breaths a minute, and counts consistently above 40 at rest are worth a call to the vet. Take a short video of any unusual breathing or movement, because it can be hard to reproduce at the clinic.

Trust your instincts

You know your cat better than anyone. If something seems wrong, it usually is. Calling a vet costs little, and a quick phone call can help you decide how urgent the situation is. When in doubt, go.

This article is general educational information, not veterinary advice. Every cat is different. If your cat is unwell, or you are unsure about a symptom, diet change or medication, contact your veterinarian.