i dont think it is kennel cough, as anything coming up isnt one of the symptoms and it was anything we saw in Enzo when he had it, although while i was reading up on it, it does "Some owners also note vomiting in their dogs, but usually their pets are just expelling a large amount of phlegm". I dont think it is pneumonia from what you described. What does his breathing sound like, is it shallow? are his breaths rapid? If possible get his temperature, a fever is another sign on pneumonia. It possible i could be one of those two, hopefully kennel cough if it is, as it can easly be cleared up. you really should have this little guy checked out by a vet as soon as you can! i hope he is alright
