Again, I'm all for shelter dogs and I've had mutts and they have been great dogs. I'm all for encouraging people to adopt dogs from shelters; however, that is not for everyone. Some people need certain characteristics in their breed, and if you have small children in the house or plan to soon, you have to be very careful about the animals you are making a part of your family. If you are looking for a certain breed because you want specific characteristics (i.e. non-shedding; temperment; "hypoallergenic" etc.), you have to be careful about getting a pure-bred rescue dog. (Again, just because you get the dog from a reputable breeder (and in my opinion they don't have to have champions to qualify), does not mean they will have those characteristics; however, your chances of getting a dog that does have such characteristics is much higher.)
Here was my research experiece. Not to sound like a broken record from my previous posts, but we absolutely adore our Havanese. After DD was born and was out of the infant stage, we thought about adding second dog, but knew if we did we wanted another Havanese, so I checked into several Havanese Rescues and have continued to check them here and there over the last couple of years just to see what dogs are available.
There are somedogs that have come from familes that just didn't want them, or couldn't keep them for whatever reason (I found a sweet story about an already adopted rescue that was rejected because its former owner didn't like that it wanted to be on her lap all the time and was constantly right next to her-- uh- lady that is what the Havanese does by breed nature

). However, the vast majority of the rescue dogs I found were puppy mill dogs-- the rescue organizations I checked with disclose that to you and advise you of where they obtained each dog they have available for adoption. Apparently some puppy mills use the rescues for a dumping ground when the dogs don't meet the breed standards they want and either aren't sold as puppies or as adults are not breeding sucessfully. The rescue facilities obviously are going to take them in, because of the risk that if they don't the millers will kill them. (Others are rescued when the mills are exposed and shut down).
What I discovered was that because of these being mill "rejects", many of them were what they refer to as "Shavanese"-- a term I think the millers came up with to try to sell puppies with a major breeding issue. "Shavanese" are Havanese that through very poor breeding (and probably even mixed blood somewhere), wind up with short hair and not only that, they shed, and therefore are not "hypoallergenic". This totally defeats the purpose if you are wanting a Havanese because the breed does not shed and is great for people with allergies. We have allergies in our house, so that doesn't work for us. They are probably great dogs, and will make perfect sweet pets for someone, but the fact is that if you need a Havanese because of the allergy problems you have, and will have with other dogs, this would probably not be the right choice of dog for you.
Also, we found that most (not all) of the rescue facilities would not adopt to people with children under the age of 6, EVEN though the Havanese breed is generally known to be great with kids. The answers we got were that because of the lack of socialization of these puppy mill dogs and the potential variations from breed characteristics due to poor or unknown breeding, the facilities could not be sure that the dogs would be safe with smaller kids, or the kids safe for the dogs. There were exceptions. We found that where the rescue came from a known family that just couldn't keep it due to deployment, moving, family illness, death, etc. that the rescue organization might allow such a dog to be placed with kids, particularly if the dog had come from a family with small kids.
Our breeder has started taking in and offering a few rescue dogs, so if we do add to the family, we may consider even doing that through her because we know that with her familiarity with the breed, she will not steer us wrong in terms of whether the rescue is a good fit with us. I suspect (although I have never talked to her) that some of her rescues may have been dogs she initially bred because it is in our purchase contract that if we EVER decided to get rid of our dog outside of our family members (no chance of that!!!!), that we would have to first give her the right to re-claim the dog.