Links:

Working Line Tervuren (in the US):
            Haute Volee
            Sprite Belgians (no longer breeding, but very informative site)
               en Hommage Belgian Shepherds

Working Malinois Kennels (in the US):
                La Forge Malinois
                Dantero Malinois

Working Groenendael  (Belgian Sheepdog) Kennels (In the US):     
            Isengard Belgian Sheepdogs
               Obsidian Belgians

General breed information:
            Working Line or Show Line? 
            What's Good and Bad about Belgian Shepherds
            So you think you want a high drive puppy?
                 Wikipedia Belgian Shepherd

Health Info:
            Spay Neuter Considerations
            Vaccination Protocol
            Heartworm article, Dr Dodds
            Orthopedic Foundation for Animals

Belgian Rescues (in the US):
            Groenendael
            Malinois 
            Tervuren

Search and Rescue:
                National Association for Search and Rescue
                International Police Work Dog Association
            

Dog Sport Titles and Abbreviations

A few fun things to do with a Belgian:
                Agility
                Dock Diving
                Flyball
                Nosework
                Obedience or Rally
                Protection Sports

Training:
                Fenzi Dog Sports Academy
                Michael Ellis School for Dog Trainers
                Silvia Trkman videos and online classes
                Fanny Gott, Online Classes
                Ann Braue Canine Training Center