Sorry to hear this and it must be worrying your parents sick. So sorry you had to have one put to sleep. It would be hard to guess what might have been going on. Did the Vet run any blood work to check for kidney/liver/pancreas problems? Just no way to give a definitive answer to this. How old was the dog?
She was 9 and the vet run every test imaginable. She just stopped eating and was wasting away in front of us.
Oh, that's too bad. Sometimes we just don't know the answers and without a necropsy being done,no way to tell. I would *suspect* a possible cancer going on. Sorry. :-(
Hi I have a chin who I'd a little over a year old and he is doing similar. He won't eat and now sounds like he is coughing anytime he moves or lays down. Almost sounds like bronchitis. Did you ever get an answer ?