Welcome to YorkieTalk, Jeni. Hope all turns out well with little Pickle! Our Toto makes a similar sound when she is playing hard and has done this from day one! Scared us silly the first time she did it because we had read about trachael collapse and that's the way it sounds. We rushed her back down to the vet and she examined her and said she showed no signs of a problem with her trachea. She checks it every month when we take her in! Let us know what they find with Pickle!!