What Signals Show When a Cat Is Sick

1 Body and Behavior Signals of a Sick Cat

Can we read a cat’s health from daily life? Of course. Let’s discuss the signals of a sick cat.

Body signals

1. Eyes

Like people, cats have some eye discharge normally, dark brown. When the eye has a problem, the brown discharge turns yellow-green and increases. Severe pain makes the cat unable to open the eye, or one eye smaller than the other.

2. Nose

Cats sometimes have black crust at the nose – secretions mixed with dust – just clean it. But clear nasal discharge needs attention.

Clear, colorless discharge may be allergy or an early upper-respiratory infection; when it turns yellow-green (like phlegm), it is likely inflammation. Untreated, blockage follows, hurting smell, appetite, and stamina.

3. Mouth

Saliva mainly lubricates food and kills germs, helping it pass the esophagus; healthy saliva flows down. Mouth problems stop normal flow, so the cat drools. Inflamed mouth also smells foul.

4. Stool

Cats drink little, so normal stool is dry and hard. How to judge health from stool:

Stool is the most important health indicator; if abnormal shape persists, see a vet.

5. Urine

Cats come from deserts and limit urination to save water. Sudden increase in urine, more drinking, or straining sounds at urination need attention – possible kidney issues, diabetes, pyometra, or other endocrine disease.

Behavior signals

1. Cough or sneeze

Dust or odor irritates the nose and causes sneezing – normal. But frequent sneezing not from irritation may mean nasal-mucosa inflammation; with discharge and tears, likely upper-respiratory infection or allergy.

Eating too fast may choke and cough; but rapid coughing (like human asthma) likely means tracheal or lung inflammation.

2. Breathing difficulty

A relaxed cat breathes about 30 times per minute; above 50 needs attention.

Upper-respiratory infection can inflame and block the nose, causing mouth breathing.

3. Vomiting of food

Cats vomit easily; hairballs or eating too fast cause it. Health issues like gut inflammation, nerve disease, or organ disease are also main causes.

Finally, keep your vet’s contact; when warning signs appear, talk to the vet first, who decides if a visit is needed. That is the safest approach.