My Siberian Husky stays outside during the day, he's never gotten loose, so I know he hasn't gotten into anything. However, there's a dog that comes up to him sometimes, and I've seen her for the past few days. Last night I heard him coughing, almost sounded like a "hacking" noise. He vomited and it was white foamy stuff...but I couldn't find anything in it, just something that looked like a piece of dry grass. He's still coughing, but not vomitting. I do plan to take him to the vet today, it's just to early to schedule an appointment. I'm just wondering if anyone can tell me what's going on with him to make me feel a little bit at ease.