It's probably a long shot to post here, but worth a try. Do you know someone who lost a dog? My family found a smallish young adult short-haired female dog last night, Huron Township/Woodhaven area. Primary colors are black and white. (Not giving a very detailed description because my mom doesn't want me to-- she won't release the dog to someone who can't describe it very well or provide a picture.)
The dog is apparently very sweet and has some manners but very excitable, and she doesn't seem to have been a stray for long. Please contact me if you know who this puppy's humans might be!