When a cat has anal prolapse, the anus will be abnormally swollen and red. In severe cases, there will even be an obvious drooping swelling that looks like a sausage. In addition, the cat's appetite will be affected, and the cat will squat to defecate frequently. Cross action. Generally speaking, cat prolapse may be caused by prolonged diarrhea that does not heal, excessive force during defecation, swallowed foreign objects that are difficult to expel, excessive intestinal parasites, etc. It is best for the owner to take the cat to the hospital for examination and symptomatic treatment in time.