I think I'dh ave stuck my head out the door/window and shouted 'OI! THATS NOT APPROPRIATE EITHER!'...
Way back in the mists of time I lived in a property with a front garden and my gate fell off/broke/was nicked by someone down the street (pointless aside, later on I nicked a much nicer one from elsewhere)...
I had three dogs at the time and spent a LOT of time picking up poo and hosing down wee as one of my dogs was incredibly fussy about where she went and would not go within five feet of where anyone ELSE had been... and as I had no gate and was standing out there with her on a long line freezing my wossnames off, I didn't need her to be any fussier than she already was.
So I started to find more poo than my dogs could be outputting and, well its gross but you get to know what your own dogs poo is like and my dogs ate raw meat and bones and did small poos... What I was picking up was five times the size and luminous fecking orange! Not my dogs poo!
One day walking back from the shop opposite my house I noticed a GSD and a labrador trotting down the road off lead, I was talking to my friend and spotted the dogs owner behind them.. the dogs veered into my front garden and proceeded to toilet there, huge great dumps...
As the owner got level with me I said 'don't you think the person who lives there might be a bit annoyed by that...'
'Oh... she's got loads of dogs, she won't notice...'
'I think she will love.. you are talking to her... here's a bag....'
SHe did actually pick it up, and did not punch me which for those parts was nothing short of a miracle!