Ignoring local bylaws, what would be the lowest height that a fence should be to prevent most medium sized dogs escaping? I plan on getting a dog. I have a backyard that is not enclosed. part of the yard is where I throw the snow in the winter with my snowblower. So, I am wanting a low fence that I can still throw snow over. Before I build, I will make sure it fits within the local bylaw, but I think they only say maximum height, not minimum.