Hi, I first noticed my rabbit seemed to be having breathing difficulties about 5 weeks ago. She was drinking alot less than normal and faces her head in the air all the time and is breathing rapidly. Also she stops eating sometimes to get her breathe back for a few minutes before then continuing to eat. I have taken her to the vets and had x-rays done, blood test and urine test. Everything came back clear and normal. We had her results sent to a specialist and they said they don't know what it could be. She seems to still have a good appetite but is constantly breathing fast and heavy, which she wasn't before. She is 3 years old and sprayed. She is a house rabbit living in a room in her own hutch but there is a bonded pair living in the room in a separate hutch (both have no health issues). I feel I've tried everything and I'm running out of ideas, has anyone got any suggestions? Many thanks.