When you want to buy or adopt a cat, you must pay careful attention to the following points: first, observe whether the cat's body is well-proportioned as a whole, whether its spirit and reaction are sensitive, whether there are any wounds on its appearance, whether its fur is intact, and whether the cat is held well by hand. Sometimes, it feels heavier than expected.

Next, you should carefully observe several important parts of the cat:

1. Ears, cat ears should be clean and free of secretions. If your cat constantly scratches its ears or shakes its head, it may be infected with ear scabies.

2. Nose. The tip of the cat’s nose should feel cool and moist with the back of your hand, and there should be no nasal fluid or secretions around the nostrils.

3. Eyes. The eyes should be clear and bright, with no secretions from the corners of the eyes (except Persian and Himalayan cats), and the third eyelid should not be exposed at the corner of the eyes (the third eyelid appears first in many cats when they are sick).

4. The anus should be clean and free of diarrhea symptoms, and the surrounding hair should be clean and pollution-free.

5. Abdomen. The cat’s abdomen should be slightly round, and the ribs cannot be touched. If the cat’s abdomen is enlarged, it may be a symptom of roundworm infection or peritonitis.

6. Hair. The most obvious health indicator of a kitten is its hair. A healthy kitten's coat should be shiny, fluffy, and stand erect. If the kitten's hair is messy and dull, it means that the kitten has been infected with a disease, or has been ill and has just recovered. It is best not to choose such a cat.