When you watch this Cavvy breathing and listen to the sound he is making as he breathes. you’ll be able to see that the dog is having difficulty on inspiration and that there is corresponding noise on inspiration and that there is paradoxical abdominal movement.Upper airway obstructions come in varying degrees of severity. When this video was taken, this Cavalier with brachycephalic occlusive syndrome had a moderate degree of obstruction. But if it opened its mouth it had virtually no obstruction at all! Which strongly suggests that the soft palate was the main component of this dogs problem.