Second, ears, a healthy cat should be sensitive to its owner's barking or other quiet sounds. After listening to the sound, your ears swing back and forth. Cats or deaf cats have a weak or slow response to sound.
The third is abnormal defecation, including constipation, defecation, soft stool, diarrhea, abnormal color and bloody stool. And urine, blood, urine, etc. This may be due to lower urinary tract problems, kidney diseases, diabetes and other health problems.
Fourth, the law of diet. A healthy cat has a big appetite. If the cat loses appetite or disappears for several days in a row, or has severe diarrhea for several days in a row, or vomits repeatedly, it means that the condition is getting worse and should be paid enough attention.