A cat’s belly will move when breathing normally. Because cats use their chest and abdomen to breathe, you can see it if you look closely. However, if the cat’s hair is longer, it may not be easy to detect, but in fact it can move. You can also put your hand on the cat's belly to feel if the belly moves. If the belly does not move obviously, it may be because the cat’s breathing is relatively weak. At this time, you need to check whether there are any abnormalities in the cat’s health.