good on ya for putting in the effort.
i spied a nice looking malmute in my backyard last summer nosing about. i went out and said "hey, dog, what're up to?" he walked right over and lay at my feet. i called the number on the tag and the owner showed up straight away. rudest prick i'd met in a long time. dog wanted to stay with me, he had to get out of the van and shoehorn him through the door. never said thanks or get stuffed or nothin, just drove off.
the bastard. no wonder the dog went for a walk.