So I thought I would share what I found out. Just in case others go through this with there dog. I have had my puppy for 7 months now. He has thrown up yellow bile at least once a week and he does a fast quick dry hack at least once a day or twice a day. Burps and gets bloated stomach. the vet done blood work to rule out liver problems and she came to the conclusion that he suffers from acid reflux. She feels the quick fast hack noise he does is from an irritated throat due to the acid comming up his throat. She said where as he does it when running it can get the juices flowing and boom it comes up to his throat and he hacks because it burns. . So she was very through. So he is on pepcid ac and he is on a probiotic dailey. So we will see if this helps. Any one have a dog with known acid reflux that spits up yellow bile and does a quick fast hack cough with it?