So sorry to hear about your sick puppy, Sharon. The worst thing about having animals is having to watch them be sick. I hope she feels better soon. My big guy, Whiskers, has been coughing a lot and has slowed way down on our walks. I suspect he has heartworms. I can't remember exactly when we got him but he has to be about 10-12 years old. Hoe can you resist those big brown eyes? I  know I can't!