How to Spot Signs of Illness in Cats

Learn how to spot signs of illness in cats, from behavioral changes to physical symptoms. Discover tips for keeping your feline healthy and when to visit a vet.

The Doctor

12/16/20244 min read

Cats are experts at hiding discomfort, which can make it challenging for owners to detect when something is wrong. Recognizing early signs of illness is critical to ensuring your cat receives prompt medical attention. In this article, we’ll guide you through the key indicators of illness in cats, what they might mean, and how to act quickly to safeguard your feline’s health.

1. Behavioral Changes

Changes in behavior are often the first sign that something is wrong with your cat.

What to Look For:

  • Lethargy: If your typically active cat becomes unusually tired or uninterested in playing, it may indicate illness.

  • Aggression or Hiding: Increased irritability or hiding more often can signal pain or stress.

  • Vocalization Changes: Excessive meowing, growling, or unusual silence can suggest discomfort or distress.

A cat hiding under a couch or appearing unusually quiet.
A cat hiding under a couch or appearing unusually quiet.

2. Changes in Appetite or Weight

A cat’s eating habits and weight are strong indicators of their overall health.

Red Flags:

  • Loss of Appetite: A sudden lack of interest in food could indicate issues such as dental problems, gastrointestinal distress, or more serious illnesses like kidney disease.

  • Increased Appetite: While less common, an unusually strong appetite may be a symptom of diabetes or hyperthyroidism.

  • Weight Loss/Gain: Rapid weight changes, even if your cat’s appetite seems normal, warrant a vet visit.

3. Coat and Skin Health

Your cat’s coat and skin can provide valuable clues about their health.

Signs to Watch For:

  • Dull or Greasy Fur: Cats usually maintain a clean and shiny coat. A sudden decline in grooming habits may indicate illness.

  • Excessive Shedding or Bald Patches: These can be symptoms of stress, allergies, or skin infections.

  • Sores or Scabs: Skin abnormalities, such as sores or scabs, may point to parasites, allergies, or fungal infections.

A close-up of a cat’s coat with visible changes such as bald patches.
A close-up of a cat’s coat with visible changes such as bald patches.

4. Litter Box Habits

Changes in your cat’s litter box behavior can often reveal underlying health problems.

Warning Signs:

  • Frequent Urination: Could indicate a urinary tract infection (UTI) or diabetes.

  • Straining or Crying During Elimination: This is often a sign of urinary blockages, which can be life-threatening.

  • Diarrhea or Constipation: Persistent gastrointestinal issues should never be ignored.

a cat is standing next to a cat in a litter can
a cat is standing next to a cat in a litter can

5. Breathing or Vocal Changes

Your cat’s breathing and vocal patterns can reveal respiratory or other systemic issues.

Symptoms to Monitor:

  • Wheezing or Labored Breathing: Could indicate asthma, allergies, or heart problems.

  • Coughing or Sneezing: Persistent coughing may signal respiratory infections or conditions like bronchitis.

  • Change in Meowing: Hoarseness or changes in vocal tone may suggest throat or respiratory issues.

A cat sitting with its mouth slightly open, indicating potential breathing issues.
A cat sitting with its mouth slightly open, indicating potential breathing issues.

6. Eye and Ear Health

Healthy eyes and ears are critical to your cat’s overall well-being.

Eye Issues:

  • Redness, cloudiness, or discharge can signal infections or injuries.

  • Squinting may indicate pain or irritation.

Ear Problems:

  • Frequent scratching, head shaking, or dark earwax might suggest mites or infections.

A vet examining a cat’s ears or eyes.
A vet examining a cat’s ears or eyes.

7. Vomiting or Excessive Thirst

Occasional vomiting is not uncommon in cats, but frequent vomiting or other changes in drinking habits can point to underlying issues.

Causes to Consider:

  • Frequent Vomiting: Could indicate food allergies, infections, or organ problems.

  • Increased Thirst: Excessive drinking may be a symptom of kidney disease or diabetes.

Pro Tip: Monitor how much water your cat drinks daily to spot unusual changes.

A cat drinking water next to a measuring cup for comparison.
A cat drinking water next to a measuring cup for comparison.

8. Sudden Changes in Mobility

A cat struggling with movement or showing signs of stiffness might have an injury or arthritis.

Signs to Watch:

  • Limping or difficulty jumping.

  • Reluctance to climb stairs or play.

  • Swelling in joints or paws.

A cat hesitating to jump onto a couch.
A cat hesitating to jump onto a couch.

Conclusion

Spotting signs of illness in cats early is key to ensuring they receive the care they need. From changes in behavior to physical symptoms, always monitor your cat closely and consult your veterinarian if something seems off. Cats rely on us to advocate for their health, so don’t hesitate to act when you notice any concerning changes.

By staying vigilant and proactive, you can help your feline companion lead a happy, healthy life.