Believe it or not, we have no such constraints where we live. Our property is surrounded by chain-link fence which was reconstructed after Katrina. The only reason that we have it is that our neighbors have “good” dogs. And, as you probably know, a “good” dog is one that craps on someone else’s lawn. The fence solves that problem.
I was just laughing about the chicken wire across the top. :)
We don’t have any restrictions regarding fences either. Our backyard is fenced in with black chain link. You’re right. A fence is about keeping other critters out, not keeping our dogs in.