This is such a foreign concept to me...purchasing other than small reptiles, birds and fish from pet stores. We don't have anything like that in my area. I know that they're out there (and I've heard of it in Southern California) but I've never seen a pet store that sells dogs or cats...only adoptions from rescues.
To be honest, the only time I've seen it was on the streets of Barcelona!
I feel so bad for those babies.