How to Know if Your Cat Is Sick
Could a normally playful purr machine turning into a lethargic loaf be a red flag? Recognizing when your feline friend is under the weather can be tricky. Learn the key signs that indicate it's time for a vet visit.
Dec 12, 2025

How to Know if Your Cat Is Sick
One of the joys of caring for cats is their laid-back nature. Cats excel at being relaxed and living the sort of lifestyle we can only dream of: playing, eating, and sleeping. Unfortunately, these habits can be a disadvantage if cats become ill. Instinctively, cats may then try to hide away, or else a regular habit (sleeping) becomes exaggerated. To decide whether your cat is actually sick, it helps to know what signs to look for.
Looking for Changes in Behavior and Appearance
- Pay attention to your cat's sleep patterns. Sick cats often sleep more. If your cat is not showing other signs of illness, such as vomiting, diarrhea, or a loss of appetite, you may monitor them for 24 hours. However, if symptoms develop, visiting a veterinarian is advisable.
- Check your cat's temperature. Use a rectal thermometer. A normal temperature is between 99.5 to 102.5°F (37.5 to 39.2°C). Anything higher may indicate a fever, which necessitates a vet visit.
- Monitor changes in litter box habits. Look for difficulty in urination, presence of blood or mucus, or changes in feces consistency. These could indicate underlying health issues.
- Pay attention to appetite changes. If your cat skips meals for more than 24 hours, consult with a vet.
- Check for signs of dehydration. Gently pull the skin between the shoulder blades; if it does not snap back quickly, your cat may be dehydrated.
- Monitor weight and body silhouette. Significant weight changes often signal a health problem.
- Examine your cat's coat. A glossy coat becoming dull and matted may indicate illness.
Looking for Symptoms
- Watch for vomiting. Frequent or projectile vomiting is a concern.
- Look for diarrhea. Liquid feces point to potential gastrointestinal issues.
- Pay attention to activity levels. Lethargy can suggest fever or pain.
- Listen for respiratory issues. Fast or labored breathing warrants immediate veterinary attention.
- Note any disorientation or head tilting. These symptoms may relate to neurological disorders.
- Check for lumps or abnormal growths. Seek a vet's opinion if you find any.
- Inspect your cat’s eyes and mouth. Watch for unusual discharge or changes in gum color.
Checking for Specific Illnesses
- Look for signs of fleas. Excessive scratching or the presence of flea dirt indicates infestation.
- Listen for coughing. A dry cough may point to hairball issues or other respiratory problems.
- Monitor for symptoms of hyperthyroidism. These include increased appetite, nervousness, and weight loss.
- Identify signs of diabetes. Watch for excessive thirst, urination, and changes in coat appearance.
- Be aware of FLUTD symptoms. Increased or painful urination and blood in the urine can indicate this condition.
Tip: Always consult your veterinarian if you notice unusual signs. Prompt treatment is the best course of action to ensure your pet's health.
If you suspect your cat might be sick, don't hesitate to consult with a professional. For more information and to book a home veterinary service, visit Vetlyf.
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