I've had my rat Bella for a little over two years now, and for the past couple of months she's had chronic respiratory disease. She got it from another rat she was with for a while, and when I took her to the vet, he diagnosed her with pneumonia and gave me antibiotics. It turned out that we couldn't get rid of it, so she is permanantly on a dose of antibiotics and breathing medication each day. Her breathing isn't normal and I can hear her sometimes. She often breathes rather heavily and quickly, but she seems fine otherwise. She moves quickly, has a good appetite, and doesn't seem to be in any pain. Sometimes I just look into her little face and I hope I'm doing the right thing by keeping her alive and on this medication. I don't want her to be suffering. She is such a sweet little girl.