It might be impossible to know exactly what happened here, but the presumption is that a family moved, leaving behind garbage, and the family pet.

This photo that surfaced on October 19th shows the dog laying on a mattress left with other items on the side of a neighborhood street in Auburn Hills.

Fortunately, according to the photo's caption, the dog is in good care now.  Mike Diesel, who founded Detroit Youth and Dog Rescue, gained the dog's trust and is now caring for him.  The dog's name is Boo.