
Collapsing tracheas are common in small dogs, my sisters Pomeranian had it and my Jack Russell had a partial collapse. Not nice, I can imagine how you feel. My dog lived to 15 1/2yrs with hers and died of something unrelated, so I don't think its the end of the world. The only treatment I have heard of is placing replacement "rings" inside the trachea to keep open the airway, how successful this is or whether I would of chosen this option for my dog is questionable, but in such a young dog, it could be worth researching. Good luck.
Dawn.