[YorkieAunt]

Sounds like the States aren't that different from here up North.
I checked into the CYTR (Canadian Yorkshire Terrier Rescue) and ALL of the dogs listed were to go to a home with no kids, no other pets,had to have a fenced back yard, no smoking household, and a household with no allergies. With that many restrictions, it is no wonder that the dogs don't get adopted and stay at the foster homes for years. It also explains why the rescue organizations are over crowded. It is not necessarily from too many rescued dogs, it is because they don't seem to really want to rehome the animals unless it is the perfect home. Even foster homes for skin kids aren't this rigid.
I tuly think that everycase should be looked at on a case to case basis. I do know how the shelters work and how much the volunteers put in because I volunteer at our local Humane Society.