So glad you rescued this puppy! I agree it sounds like you have followed the correct process to try and locate the original owner. Unfortunately, they have not come forward.
As you say, go ahead and leave the fliers up; but I would proceed from here on out as though he were mine.
IF the owners show up ~ well, let's cross that bridge if you come to it.
__________________  Mommy to Lucy, Ringo, and Matthew |