hi my mates dog got bumped by a car about 6 wks back,now since then he's been taking him easy although the dog did'nt brake any bones no cuts,but did take an inpact down one side of him,the wind was knocked out of him for a few seconds he was back on is feet in no time,is breathing was'nt normal for a few days but soon got over it.my mate ran the dog the other nite he seemed to be fine did'nt pull up or owt.then we had him out last nite ran ok showed abit of stiffness towards the end of the nite and is breathing got abit short.a couple of hours later my mate heard this noise in the the dog ken