Cats are notoriously good at hiding when they don’t feel well, which means it’s important to be vigilant and know what to look for. If you think your cat might be sick, it’s essential to know how to tell if your cat has a fever.
A fever in cats is a symptom, not a disease itself, and it signals that something is wrong. A normal temperature for a cat falls between 99.5 and 102.5 degrees Fahrenheit.
This article will walk you through the telltale signs of fever in cats, explain when it’s time to see a vet, and guide you on how to safely take your cat’s temperature at home.
Understanding feline fever
A fever in cats is a body temperature above 102.5°F. Temperatures above 106°F can cause organ damage. It’s important to remember that a fever isn’t a disease itself, but a symptom of an underlying condition.
In cats, fevers usually point to:
- infections (bacterial, viral, or fungal)
- tumors
- injuries
- certain medications
- diseases like lupus
Sometimes, vets can’t find a cause for a fever. This is called a Fever of Unknown Origin (FUO), and usually means the fever lasts for more than a few days.
Recognizing the Signs: Physical Symptoms
Sometimes, a cat’s fever is obvious. Other times, it’s more subtle. Here are a few of the physical symptoms you might notice if your cat has a fever:
Warm Ears and Paws
Warm ears and paws can be a sign that your cat has a fever, but this isn’t always a reliable indicator. Be sure to consider other symptoms, too.
Increased Respiratory Rate
If your cat is breathing rapidly, that could be a sign of fever, but it can also indicate other serious issues. If you notice your cat is breathing fast, it’s important to get them to a vet right away.
Dehydration
Fever can often cause dehydration, and a loss of interest in drinking water is a serious cause for concern. Signs of dehydration include eyes that look sunken and gums that feel sticky to the touch.
Shivering
Just like with humans, shivering can be another sign that your cat has a fever. Don’t try to warm up your cat yourself. Instead, seek advice from your veterinarian.
Increased Heart Rate
A fever can also cause your cat’s heart rate to rise. It’s often hard to accurately assess heart rate at home, but your vet can measure it accurately.
Behavioral changes that may indicate a fever
Sometimes, the first sign that your cat isn’t feeling well is a change in their behavior. Here’s what to look for:
Loss of appetite and thirst
Most cats will temporarily lose interest in food when they have a fever. Loss of interest in water is more concerning, as it can quickly lead to dehydration.
Decreased activity level and lethargy
A cat with a fever is likely to be less active and more tired than usual. If your cat is persistently or increasingly lethargic, it’s time to see the vet.
Changes in grooming habits
Changes in how your cat grooms can also be a sign of illness. A cat with a fever may stop grooming altogether, leading to a matted or unkempt coat.
Hiding and other behavioral changes
Cats who are sick often hide, especially if they’re feeling vulnerable. If your cat is hiding more than usual, or if they’re suddenly more irritable or clingy, it could be a sign of a fever or other illness.
Taking your cat’s temperature
The only way to know for sure if your cat has a fever is to take its temperature. Pediatric rectal thermometers are typically the most accurate. A normal temperature for a cat is between 100.4 and 102.5 degrees Fahrenheit.
Here’s how to take your cat’s temperature:
- Use lubricant like petroleum jelly on the tip of the thermometer.
- If possible, have someone help you restrain the cat.
- Carefully insert the thermometer about one inch into the rectum.
- Clean the thermometer thoroughly after use.
- Give your cat a treat.
If you don’t feel comfortable taking your cat’s temperature rectally, consult your veterinarian. Other methods are less accurate.
When to see a vet
You should take your cat to the vet right away if their fever lasts for more than 24 hours or if their temperature goes above 104º F.
The vet will probably run some tests to figure out what’s causing the fever. Treatment might include prescription medications, and they may give your cat IV or subcutaneous fluids if they’re dehydrated.
Important: Never give your cat any medication unless your vet tells you to. Some human medications are poisonous to cats.
Frequently Asked Questions
Can you tell if a cat has a fever by feeling its ears?
Feeling your cat’s ears is not a reliable way to determine if they have a fever. While warm ears might indicate a fever, they could also simply be due to environmental factors or normal body temperature fluctuations. The best way to know for sure is to take your cat’s temperature with a thermometer.
How do I tell if my cat has a fever without a thermometer?
Without a thermometer, it’s tough to say definitively if your cat has a fever. However, you can look for other signs like lethargy, loss of appetite, shivering, rapid breathing, hiding, or decreased grooming. If you notice these symptoms, it’s best to consult a veterinarian to confirm and treat the underlying cause.
Can you tell if a cat has a fever by touching?
Similar to feeling the ears, touching your cat’s forehead, paws, or belly isn’t a very precise way to diagnose a fever. A cat’s normal body temperature can vary, and what feels warm to you might be perfectly normal for them. Relying solely on touch can be misleading. Again, a thermometer is the most reliable tool for detecting a fever.
Conclusion
If your cat is lethargic, has a poor appetite, is breathing rapidly, or is hiding, they may have a fever. It’s important to take your cat to the vet if you suspect a fever or any other illness.
By monitoring your cat and acting quickly, you can help them get the care they need to stay healthy and happy.