Cat Fever 101: Signs, Causes, and How to Check

Cats are masters of masking discomfort, but even our clever feline friends can’t completely hide when they’re under the weather. One subtle yet serious sign of illness in cats is a fever. Whether you’re a seasoned cat owner or new to the joys of having a furry companion, knowing how to tell if your cat has a fever can make all the difference in ensuring their health and happiness.

In this guide, we’ll explore how to tell if your cat has a fever, what cat fever is, common symptoms, and the steps you can take to check your cat’s temperature safely at home. Let’s dive in to make sure your feline friend stays healthy and comfortable.

What is a Fever in Cats?

A fever in cats—sometimes called a true fever—occurs when their body temperature rises above the normal range, typically between 100.4°F/38°C and 102.5°F/39.17°C. Fevers are a natural defense mechanism, signaling that your cat’s immune system is hard at work battling infections or other health issues.

So, can cats have fevers? Absolutely.

Fever often indicates your cat is fighting off a bacterial infection, viral infection, or even a more complex condition like feline infectious peritonitis. However, it’s not just infections that can cause fevers—underlying causes like inflammation, heatstroke, or even reactions to medications may also play a role.

Recognizing the safe temperature limits for cats can help you act quickly to address any potential health issues.

Common Symptoms of Fever in Cats

Spotting a fever in cats isn’t always easy. Cats are great at masking their discomfort, often showing only subtle signs that something might be wrong. However, knowing what to look for can make all the difference in ensuring your feline friend gets the care they need. Here are some key cat fever symptoms broken down into physical and behavioral categories:

Physical Signs

• Warm Ears or a Hot Nose:While not definitive indicators of fever, these are among the easiest signs to notice. A fever may cause your cat's body to radiate more heat, making their ears or nose feel unusually warm to the touch. However, external temperature changes or other factors can sometimes mimic this sensation, so it’s best to pair this observation with other symptoms.
• Lethargy:Cats are naturally experts at napping, but there’s a noticeable difference between a cozy, content catnap and a lethargic, unresponsive cat. If your typically playful companion is suddenly uninterested in toys, meals, or climbing their favorite perch, this could be a sign of an underlying issue, including fever.
• Loss of Appetite: One of the first signs something is amiss with your cat is a change in their eating patterns. A fever can dampen your cat’s appetite, causing them to skip meals or nibble sparingly. Since cats are creatures of habit, a sudden shift in their eating routine warrants attention.
• Poor Grooming:Cats are known for their meticulous grooming habits, often spending hours keeping their coats clean and tidy. If your usually polished feline starts to look disheveled or develops matting in their fur, it may indicate they’re feeling unwell. Fever can sap their energy, leaving them too tired to maintain their usual grooming routine.
• Changes in Body Posture or Movement:Pay attention to how your cat carries themself. A feverish cat might appear stiff or hesitant in its movements. It may also lie in a crouched or hunched position, which can indicate discomfort or pain.

Behavioral Changes

• Hiding: Cats often withdraw when they’re unwell, seeking quiet, hidden spots where they feel safe. You might find your cat tucked away under furniture, in a closet, or in other secluded areas where they don’t usually spend much time. This instinct to hide stems from their natural desire to protect themselves when they feel vulnerable.
• Decreased Social Interaction: A typically affectionate cat that suddenly avoids cuddles, playtime, or other interactions may be trying to tell you something. Fever can make your cat feel irritable or withdrawn, leading them to shy away from their usual social behavior.
• Restlessness or Irritability: While some cats retreat when unwell, others may exhibit signs of restlessness or irritability. Fever can make your cat feel physically uncomfortable, and they may respond by pacing, vocalizing more than usual, or showing signs of agitation when touched or approached.
• Changes in Vocalizations:Some cats become more vocal when they’re not feeling well, while others may grow quieter than usual. Listen for unusual sounds like growling, yowling, or even excessive purring (which can sometimes signal discomfort rather than contentment).
• Reduced Playfulness:Cats who enjoy active play may suddenly seem uninterested in their favorite toys or games. This behavioral shift is often accompanied by lethargy and a lack of enthusiasm for activities that normally excite them.

While these symptoms may overlap with other conditions, monitoring for fever symptoms can provide crucial clues.

How to Check if Your Cat Has a Fever at Home

If you suspect your cat might be running a fever, confirming their body temperature is essential. But here’s the catch: cats aren’t exactly thrilled about thermometers. Don’t worry—here’s a step-by-step guide to checking your cat’s temperature safely at home.

1. Gather Your Tools: For accuracy, use a digital thermometer or a pediatric rectal thermometer. Avoid mercury thermometers—they’re not safe for cats. To ensure comfort, grab a lubricant like petroleum jelly.
2. Create a Calm Environment:Cats can sense stress, so stay calm and gentle. Swaddling your cat in a towel can help keep them secure and comfortable, reducing stress for both you and your cat. If your cat resists, consider enlisting a helper to hold them gently but firmly without causing distress. Speak softly and reassure them throughout the process.
3. Take the Temperature:Apply lubricant to the thermometer’s tip. Carefully insert the thermometer about one inch into your cat’s rectum. This is best done when your cat is calm and restrained. Wait for the thermometer to beep, then remove it and check the reading.

When to Visit the Vet and How to Monitor Your Cat’s Health

While some fevers in cats can resolve on their own, others may indicate a more serious underlying issue. It’s important to recognize when your feline friend needs professional care.

If your cat’s fever persists for more than 24–48 hours or is accompanied by severe symptoms, it’s time to seek emergency care. Look for these red flags:

• Persistent fever over 104°F/40°C
• Vomiting or diarrhea
• Extreme lethargy or unresponsiveness
• Labored breathing
• Signs of a potential bacterial infection like swollen lymph nodes or unusual discharge
• Other symptoms of serious infectious diseases, such as jaundice or significant weight loss

These symptoms could point to conditions like upper respiratory infection, cat scratch fever, or even more severe ailments like bobcat fever. Timely intervention is key to addressing these health issues.

Monitoring Your Cat’s Health Proactively

Even if your cat seems to recover from a mild fever, monitoring its overall health is crucial. A proactive approach can make all the difference in catching problems early.

• Regular Litter Box Checks: Products like PrettyLitter can provide subtle insights into your cat’s health. By changing colors, PrettyLitter alerts you to potential health issues like urinary tract infections or other abnormalities, making it a simple yet effective tool for cat owners.
• Observe Eating and Drinking Habits: Changes in your cat eating patterns or signs like your cat not drinking water can signal lingering issues. Keep a close watch to ensure their routines return to normal.
• Routine Vet Visits: Schedule check-ups with your veterinary clinic, even if your cat appears healthy. Preventive care and regular monitoring can catch potential problems before they escalate.

Take Safe Steps Today

So, can cats get fevers? Yes.

Understanding how to tell if your cat has a fever is essential for any cat owner. By recognizing the signs, taking safe steps to check their body temperature, and seeking veterinary attention when necessary, you can ensure your cat gets the care they need. Take charge of your cat’s health today.

 

Sources:

1. WebMD. Fevers in Cats.https://www.webmd.com/pets/cats/fevers-in-cats
2. VCA Animal Hospitals. Recognizing the Signs of Illness in Cats.https://vcahospitals.com/know-your-pet/recognizing-signs-of-illness-in-cats
3. Sharon Lakes Animal Hospital. Are my cat's ears supposed to be warm?https://www.sharonlakes.com/site/blog-south-charlotte-vet/2023/12/15/cat-hot-ears