Thanks for all the great advice everyone! I called the vet and he said that since he has had his initial 3 puppy shots that it probably isn't kennel cough, that he may have a cough. He said the best thing to do is wait and see. I checked his gums and took a temp, everything is okay there,I'll wait and see if he improves if not he said I can use 1/16 of a tsp of cough syrup!He's only 5lbs! Anyway, he's running around and playing and eating! I think maybe i'm being to overprotective (according to my hubby, I'm "mother henning" again LOL)Better safe than sorry.....right???