A couple days ago I found a stray Chihauhau mix while taking my dog for his nightly walk. The stray (I'm calling him Little Dude) had no collar and isn't microchipped. I have posted on multiple websites and FB, I have contacted the local humane societies, pet stores, and vet clinics in my area, and walked around the neighborhood asking people if this dog looks familiar. No luck yet. This little guy was obviously someone's pet. He's housebroken, very affectionate, and is an overall great dog. I can't keep him, but I don't want to drop him off at the humane society because I know he'll be a bundle of nerves, which may lower his adoption chances. He was very scared and nippy when I found him, but now he's nothing but a love bug.
I guess I'm asking for advice. How long should I wait before I try to find him a new home? What else can I do in the meantime? Will I get into trouble legally if I try to rehome him?
I'm located near Grand Rapids, MI if that makes any difference.
Thank you in advance for any advice you may be able to give me.