Person Holding sick White Black and Brown Cat

How to Tell if a Cat Has a Fever? If you suspect your cat has a fever, the most accurate way to tell is by taking their temperature.

A cat’s normal temperature ranges from 100.5 to 102.5°F (38.1 to 39.2°C).

Anything above this range is considered a fever.

While you can observe behavioral changes, like lethargy and lack of appetite, the best way to confirm is by using a thermometer.

Signs Your Cat May Have a Fever

While you can only confirm a fever with a thermometer, there are some common signs that may indicate your cat is feeling unwell. Keep an eye out for the following symptoms:

  • Lethargy and Weakness: Cats with a fever often become less active and sleep more than usual. If your typically energetic cat suddenly seems tired and weak, it could be a sign of illness.
  • Loss of Appetite: A sudden decrease in appetite is another warning sign. If your cat is refusing food or water, it may indicate that they are not feeling well, which can be a symptom of a fever.
  • Shivering or Trembling: Just like humans, cats may shiver or tremble when they have a fever. If you notice these behaviors, it’s time to check their temperature.
  • Rapid Breathing or Panting: Cats may breathe faster or start panting if they have a fever. This occurs because their body is trying to regulate its temperature.
  • Warm Ears or Paws: Although it’s not a definitive sign, if your cat’s ears or paws feel unusually warm to the touch, it could be a sign of a fever.

For more on maintaining your cat’s overall health such as coughing, check out our guide to common feline health issues.

How to Measure Your Cat’s Temperature

To check your cat’s temperature, use a digital rectal thermometer designed for pets, which can be found at pet stores or veterinary offices.

Apply a small amount of lubricant, such as petroleum jelly, to the thermometer for comfort.

Gently insert it about one inch into your cat’s rectum, holding it in place until it beeps.

A temperature above 102.5°F (39.2°C) indicates a fever.

If it’s mild, monitor your cat closely, but if the fever is high or accompanied by other symptoms, contact a vet immediately.

For detailed steps on taking a cat’s temperature, visit Wikipedia’s guide on cat health.

What Causes a Fever in Cats?

A fever in cats is often a sign that the body is fighting off an infection or illness. Some common causes of feline fever include:

  • Bacterial or Viral Infections: Bacterial and viral infections, such as respiratory infections, are the most common cause of fever in cats.
  • Parasites: Parasites like fleas, ticks, or intestinal worms can cause fevers in cats as their bodies work to fight off the infection.
  • Inflammatory Conditions: Conditions such as arthritis or other inflammatory diseases can lead to elevated body temperatures in cats.
  • Toxins: Ingesting something toxic can also cause your cat to develop a fever. This includes poisonous plants, chemicals, or certain foods that are harmful to cats.

Learn more about common cat illnesses to stay informed about potential health issues.

When to See a Vet

If your cat’s temperature rises above 104°F (40°C) or they’ve had a fever lasting more than 24-48 hours, it’s crucial to consult a veterinarian, as prolonged high fevers can be dangerous and may require prompt medical intervention to avoid complications.

In addition to monitoring their temperature, you should watch for other concerning symptoms, such as difficulty breathing, extreme lethargy or sudden collapse, vomiting, or diarrhea.

Yellowing of the eyes or gums could indicate jaundice, which is another sign that your cat needs immediate veterinary care.

Early detection and treatment can prevent more severe health issues from developing.

How to Keep Your Cat Comfortable at Home

Black and White Tabby Cats Sleeping on Red Textile

While waiting for veterinary advice, it’s important to help your feverish cat feel as comfortable as possible.

Ensure they have constant access to fresh water, as staying hydrated is crucial in preventing dehydration, which can worsen their condition.

Create a quiet, peaceful space away from loud noises, children, or other pets to reduce stress and allow your cat to rest.

Additionally, keep a close eye on any new or worsening symptoms, such as lethargy or changes in appetite, and check their temperature regularly to monitor their progress and provide helpful updates to the vet if needed.

Conclusion

If you suspect your cat has a fever, the best way to confirm is by taking their temperature with a digital thermometer. Look for signs such as lethargy, loss of appetite, or warm ears.

Fevers in cats can indicate infections, inflammation, or toxins, so it’s essential to monitor their health and seek veterinary care when necessary.

By staying alert to changes in your cat’s behavior, you can catch any signs of illness early and ensure they receive the care they need.

FAQs

You can use a regular human thermometer to take your cat’s temperature, but it’s best to use a digital rectal thermometer made for pets for more accuracy.

If you’re unable to take your cat’s temperature because they’re too distressed, it’s safer to consult a vet, who can check for a fever and suggest appropriate treatments.

Never give your cat human medications like aspirin or ibuprofen, as they can be toxic; always seek advice from your vet for safe treatment options.