Nate Wessel
I saw one of those signs today but didn't have a camera on me so I'll need to go back for that. They're by the marked entrances to Dog Hill off Colborne. 

The sign said that dogs walkers are not the only intended users, but it also marked the paths as areas, not ways and if I recall it is all fenced in. It might be OK to tag it as a big linear dog-park-system, if we can add the fences and gates around the paths as well. Otherwise I agree a tag on the ways would suffice. 