
Hi,
Why don't you just go over to his door very nicley, and say"excuse me but your dog must have got out, it would be awfull if some think happened to it". Just see what response you get, if he is rude then say
it is against the law, I was only trying to help before the dog warden picked it up the charged you a fee."
Then if he is still rude, then ring the local dog wardens that will come and collect it. But!! he may be nice!!
Regards
Denese