When their gums get white that usually means low blood sugar. Ask your fiance if he had anything to eat at all before then. If not, then the playing around probably used up any energy that he had, and then once his blood sugar dropped it caused him to throw up. Giving him nutrical was definitely the right thing. How big is your pup? I think no matter how big the dog is if their blood sugar drops they get sick. My boyfriend's sister's dalmation is a picky eater and when she doesn't eat she throws up too. So that could have been the problem, but it also could have been the rollercoaster ride he was on
.