Well I guess its really according where you live. I have good neighbors all around and we never get on each others nerves on anything that I know of. I don't think the bushes is "so" important that I would have had a duck about it. At least the owner wasn't letting him go right there on the green grass. Might need to lighten up a little. No offense meant.
Had my new neighbor come walking up in my yard with his small dog on a leash. We greet one another and start talking like normal people do. Next thing we know the dog takes a dump while we're standing there talking ....in my yard..... while I'm standing there. The owner (Jim) turns about three different colors and says "I'm sorry about that.... I will go get my shovel!" I told him "Don't worry.... it's just dog **** man!"