Background info and things I look for in a 'responsible' breeder:
http://www.dogplay.com/Breeding/ethics.html
http://www.woodhavenlabs.com/breeder.html
http://www.canismajor.com/dog/hvpup1.html
http://www.dogplay.com/Breeding/ethics.html
http://www.woodhavenlabs.com/breeder.html
http://www.canismajor.com/dog/hvpup1.html