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How to Tell If Your Cat Is Sick: Signs to Watch For



Cats are masters at hiding illness, a survival instinct inherited from their wild ancestors. Because of this, it’s often challenging for cat owners to recognise when something is wrong. However, paying close attention to subtle changes in behaviour, appearance, and habits can help you detect early signs of illness. In this blog, we’ll explore the key indicators that your cat might be unwell and what steps you should take to help.


Signs That Your Cat Might Be Sick


1. Changes in Eating and Drinking Habits

• Decreased Appetite: If your cat skips meals or eats significantly less, it could indicate dental problems, nausea, or a more serious condition like kidney disease or diabetes.

• Increased Thirst: Excessive drinking may signal issues such as kidney problems, hyperthyroidism, or diabetes.

• Sudden Weight Loss or Gain: Noticeable weight changes, even if subtle, should not be ignored.


2. Lethargy or Low Energy


Cats love naps, but a sick cat may seem excessively tired, uninterested in playing, or spend more time hiding. If your usually active cat becomes unusually withdrawn, it could be a sign of illness.


3. Unusual Behaviour

• Aggression or Irritability: Pain or discomfort can cause a normally calm cat to lash out.

• Hiding: Cats often retreat to secluded areas when they feel unwell.

• Clinginess: Conversely, some sick cats may seek extra comfort from their owners.


4. Changes in Grooming Habits

• Neglected Grooming: A sick cat may stop grooming altogether, leading to a matted or unkempt coat.

• Excessive Grooming: Cats with skin irritation or pain may obsessively groom certain areas, sometimes causing bald patches.


5. Vomiting or Diarrhoea


While occasional hairball-related vomiting is normal, frequent vomiting or diarrhoea could indicate food intolerance, poisoning, or underlying illnesses like pancreatitis or liver disease.


6. Breathing Issues

• Laboured Breathing: If your cat is wheezing, coughing, or breathing with difficulty, it may have a respiratory infection or asthma.

• Open-Mouth Breathing: Unlike dogs, cats rarely pant. Open-mouth breathing can be a sign of serious distress and requires immediate veterinary attention.


7. Eye, Ear, or Nose Discharge

• Watery Eyes or Redness: This may indicate an eye infection or irritation.

• Nasal Discharge or Sneezing: Persistent sneezing or discharge could be a symptom of upper respiratory infections.

• Ear Scratching or Head Shaking: This behaviour may signal ear mites, infections, or allergies.


8. Changes in the Litter Box

• Frequent Urination: Increased urination can be linked to conditions like diabetes or urinary tract infections.

• Difficulty Urinating: Straining or crying in the litter box may indicate a urinary blockage, which is a medical emergency.

• Constipation or Diarrhoea: Persistent issues with stool can point to dietary problems or gastrointestinal illnesses.


9. Unusual Sounds or Vocalisations


If your typically quiet cat starts meowing excessively—or vice versa—it could be their way of signalling discomfort or pain.


10. Bad Breath


While “cat breath” isn’t always pleasant, a strong or foul odour can indicate dental disease, infections, or underlying organ issues.


When to See a Vet


Any of the above symptoms persisting for more than 24–48 hours warrants a vet visit. Immediate veterinary care is essential if your cat shows signs such as:

• Difficulty breathing

• Seizures

• Bleeding or trauma

• Inability to urinate or defecate

• Sudden collapse


Preventing Illness in Cats

1. Regular Vet Checkups

Annual wellness exams can help catch potential problems early, even if your cat seems healthy.

2. Vaccinations and Parasite Control

Keep up-to-date with vaccinations and use preventative treatments for fleas, ticks, and worms.

3. Healthy Diet

Feed your cat high-quality, species-appropriate food to support their overall health.

4. Monitor Behaviour

Get to know your cat’s routines and personality so you can spot changes quickly.

5. Stress Management

Provide a calm, enriched environment with plenty of hiding spots, toys, and interaction to minimise stress.


Final Thoughts


Cats rely on their owners to notice when something isn’t right. By staying attentive to changes in your cat’s behaviour, eating habits, grooming, and litter box use, you can catch potential health issues early. Remember, your veterinarian is your best resource for diagnosing and treating any problems.


Your feline friend deserves the best care possible, so trust your instincts and don’t hesitate to seek help if you suspect they’re unwell. Their health and happiness are worth it!

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