Oh there is nothing worse than an unwell pet!!!
Okay, my experience. My big boy turns 20 tomorrow!
He's a Siamese and they are "allergy cats". He has always been a cougher. This summer I got worried as he had runny eyes and runny nose! I called the vet at the first sniffle (he was literally sniffling) and she assured me that even with his advanced age that it was allergies. She said they were particularly bad this summer and that she had been fielding calls left, right, and center for the same thing.
He also had a second bout of the "noises" last week but has improved this week.
So my Dr. KFdancer hat on the internet with someone I've never met, it definitely seems it could be allergies. (Not a real doctor).
My kitty also has kidney disease, diagnosed via bloodwork two years ago. As the blood work was normal, I'm inclined to think that kitty has lost weight due to the diet. I'm cracking up at the telling a cat to exercise!
How is kitty in himself/herself? What is your gut telling you? How old is kitty?
CROSSING OUR PAWS!!!