Q. Noisy in and out breaths with excessive movement in abdominal area. She stretches her neck and open mouth breathes regularly but is fine when asleep
DAVID ELBEZE, DVM, MRCVS
A. This sounds like breathing difficulties after exercise. This is not a normal condition for a cat as they usually tend to have pretty good natural stamina.
first thing that comes to mind is feline asthma, the bronchi get constricted which makes it very difficult to breath. This condition is treatable and manageable with medication.
Other options are heart failure, heartworm, lung tumor, upper respiratory complex and pleural effusion.
I would advice to take her to the vet and get her diagnosed first.