We also have a household of strictly indoor cats. They are almost never sick - except for one of them.Originally Posted by prhoshay;3734587;
Cats can have a thing called Herpes - that I wish was called SOMETHING ELSE - because it's not like human herpes. It's not a sexually transmitted gross disease. It's a respiratory condition that can be recurring in an animal that has it. It has various forms.
Our 3-legger, Tiki, has it. She had bad sniffles, constantly gummy eyes, and slept a lot. We finally got her to the vet and she was diagnosed with this. A run of antibiotics and she's been fine ever since.
However, she has been having some returning signs, starting with congestion. Time for another vet visit soon and more antibiotics.
This may be a strong possibility with your Maine Coon.