Reading your replies has made me think that my little Billi may have been damaged by wearing a collar when out for her walks. We noticed that she kept coughing because she was pulling a lot (she's 7 months old), so we now use a harness but has the damage been done. She makes snoring noises when she's asleep and sometimes sounds like she can't breathe. I think I will take her to the vets for a check up.
