The reasons why cats shed tears are as follows: 1. Cats feel physical discomfort, the owner is unhappy, and will shed tears when they are sad; 2. Cat eyes are stimulated by the outside world, foreign objects enter the eyes, and eyelashes grow inverted, causing tears. Tears; 3. Depending on the breed of cat, cats with flat faces will shed more tears. This is caused congenitally and cannot be cured. The breeder can wipe the cat's eyes more often.