We adopted a black lab from a lab rescue society in DFW.
They do look you over. They even looked all over my house.
It seemed a little extreme, but they are wonderful people and we got a great dog, not free, but reasonable.
However, my niece, who is an extreme dog lover works and leaves her dogs in the yard. Some rescue group wouldn’t let her have a dog because of this.
They may have gone a little overboard, some of them anyway.
I guess that I would be unable to get a dog from them also. My 3 labs live outdoors 24/7. That’s why I got them-large outdoor dogs. They have one job to do for me-keep people out of my backyard-and they are very good at it.