I don't see dogs wandering around in my neighborhood at all!
I've lived in my house for 5 years now, and have only seen 1!!
It was a black lab, VERY nice, but no collar, tags.. nothing. So I made signs, and had him for a day and a half!!!
Finaly his mom showed up, and took him. He must have had a WONDERFUL time because he kept coming back to my house! He would scratch at the gate to be let into the yard!! He did that for 5 or 6 months, until she finaly had enough of me bugging her to put up a fence!!!