I have an elderly neighbour on one side, but although she talks at about 100Db through the day (sure she's a bit deaf) never hear her after sundown. The guy on the other side has 2 vicious dogs, one of them came over the fence and chewed hell out our little one, but we didn't see it so couldn't do anything. It got out again and did the same to my mates dog a few doors up, but this time it was seen and he got a visit from the cops and was forced to pay the vets bills. Pretty sure the vet would have padded it up a bit too as she treated our dog and knew the score
He used to have a bloody spotlight on half the night too, my lady had me extend the fence height by 400mm and it blocks that now. Since the dog incident he's been pretty quiet, and long may it continue.
Bill