Berryhill Retrievers

 American Kennel Club  (AKC)

            Akc Labrador Retriever Breed Standard

 Orthopedic Foundation for Animals (OFA)

           Heart, Hips, Elbows

National Labrador Retriever Club

Cerf (Canine Eye Registry Foundation)

The Directory to Labrador Pedigrees

Chewy (Chewy.com)

Dog Food Research (Dog Food Advisor)