Where I grew up (WAY out in the country), there was a family whose dogs ran free through the neighbor hood. They knocked a lady down, chased dogs, attacked dogs etc. We called the police and asked them what could be done...they said, "Shoot 'em" (because they were considered a threat to people and property and livestock). So, we told the owners to get them under control, or we would act as the police told them to. That seemed to end it, mostly. They got loose once again, and another neighbor put one of the dogs down. So, a little kick is nothing -- I think it is well within your legal parameters to defend yourself (I don't know about shooting them in Canada).
