I've been seeing more and more stuff on this, but it seems like an assistance dog is for one thing, a service dog for something else. I know what a guide dog or hearing dog is so the other ones seem new to me. Hard to understand exactly since opinions are so varied. I'm trying to get our bookstore to order a book that explains this but no one seems to have anything but guide dog books. Maybe our local chapter for guide dogs would know what it's all about, I never thought of them till now. Thanks though borzoid.