Difference between normal breathing and abdominal breathing in cats:
1. Cats breathe normally using thoracoabdominal breathing. The breathing rate of their chest and abdomen is consistent, and their ribcage rises and falls regularly. The breathing rate is 30 to 40 times per minute.
2. Abdominal breathing is when cats breathe using their abdominal muscles, with their abdomen rising and falling significantly. If a cat has problems with its chest or lungs and cannot exhale enough air, or if it has pulmonary insufficiency, cardiovascular disease, liver disease, etc., it may use abdominal breathing to promote the inhalation of large amounts of air. In this case, the owner should not move the cat and should wait until the cat calms down before taking it to the vet. 
If your cat is using abdominal breathing, please take note:
1. If your cat is breathing with its abdomen or mouth open, keep quiet and avoid stimulating the cat. Take it to the vet immediately.
2. Owners should be able to determine whether abdominal breathing in cats indicates a problem with their chest or lungs, or if they are suffering from cardiovascular disease, liver disease, or pulmonary dysfunction.
3. If a cat breathes only through its chest or abdomen, it indicates an internal disease in that area.