For the last couple of weeks I have noticed Teddy 'huffing' like he is trying to clear his throat of some irritant. At times I feel he is going to vomit. I am intending to take him along to the vet in the next day or two if it doesn't clear up, but wondered if anybody has had this experience with their dog? He is eating and drinking and otherwise seems healthy, but I am concerned that it has gone on for quite a while now.