In Canine Confidential: Why Dogs Do What They Do, I wrote about two dogs I called Harry and Helen, the "happy jumpers," who unhesitatingly would jump on other dogs, from all different orientations, ...

I receive numerous emails asking something like, "Why does my dog hump other dogs?" Sometimes people ask, "Why does my dog hump his water bowl, her favorite toy, or my or other peoples' legs?" or "Why ...