First of all, observe the cat's physical condition. If there are no adverse reactions and the frequency of defecation is normal, it may be caused by hernia. This does not harm the cat's body. The owner does not need to worry. It will return to normal after the hernia is discharged. If the cat only urinates but does not defecate recently, then the ball-like thing in the belly may be accumulated feces, and the owner needs to feed the cat some intestinal laxative food.