We just adopted a 5 yr old PB Terrier, he is so great! But has a lot of skin problems and his breathing seems worst in the last few days. I know Pitts have funny breathing sounds but we have had him for 5 days and his breathing is sounding wheezy almost. Today he sounded like he was laughing in his sleep a couple of times, never heard a dog laugh in their sleep..is he laughing or having trouble breathing? He is eating, drinking but IDK. Our Shepard mix (same age) has never sounded this way.