I have also had people think that Sadie was wearing a muzzle when we are out of a walk. The GL is a little bit more difficult to get on her, but she is so easy to handle when we go for walks now. I would really like to put one on Max (my Boston Terrier), but he is such a little guy, that I can't see how it would work. There really isn't any room betwen his eyes and nose and of course the breed is "bug eyed". I would be afraid it would interfer with his vision. I noticed someone had posted that they were concerned with the dog being able to pant. The strap must be lose enough that the dog can open its mouth!