We have a jack russell x border 75% Jack 25% Border. He had Kennel cough a while ago (Nov2011). Just lately a couple of times he has had a couple of breathing issues. Or at least it sounds like that. Almost like a snoring sound as he breathes in and out. It last for 5 sometimes 10 seconds and then goes. He eats fine, runs fine and is acting normal other than this. both times it has happened he had either just woken up or just come in from the cold. Any ideas anyone?