Federations:

Federation of AKC Dog Clubs and Other Allied Groups
California Federation of Dog Clubs
Federation of Main Dog Clubs, Inc.
New Jersey Federation of Dog Clubs, Inc.
Pennsylvania Federation of Dog Clubs
Dog Feneration of Wisconsin
Virginia Feneration of Dog Clubs & Breeders (VFDCB)
American Working Dog Federation (AWDF)

Kennel Clubs:

American Kennel Club
Westminster Kennel Club
American Kennel Club
Elm City Kennel Club | New Haven Connecticot
The Newtown Kennel Club, Inc. | Newtown, Conn.
Western Reserve Kennel Club | Cleveland, Ohio
Great Barrington Kennel Club, Inc.
Cary Kennel Club | NC
Livonia Kennel Club | Chelsea, MI
Longview Kennel Club | Longview, TX

Clubs and Associations:

Dog Club - Internet dog directory (UK)
Texas Dog Organizations on the Internet
American Dog Owners Association
Utahn Dogs
Association of Pet Dog Trainers (APDT)
DogTrainerSearch.com
Boston Terrier Club of America
Sierra Gold Boston Terrier Club | Grass Valley, CA
Cuyahoga Valley Hound Association | Cleveland, OH
German Shepherd Dog Club of America (GSDCA)
Green Mountain Pug Rescue | Vermont
Irish Setters UK & Ireland
Italian Greyhound Club of America
Midwest Shiba Inu Rescue
Pembroke Welsh Corgi Club of America, Inc.
American Toy Fox Terrier Club
Chihuahua Rescue and Transport (CRT)

Agility:

United States Dog Agility Association
North American Dog Agility Council
Haute Dawgs Agility Group | Sacramento, CA
ACT-Up Agility Club
Ready to Run - Agility Club

Dog Shows:

Jack Onofrio Dog Shows
Jack Bradshaw Dog Shows
Info Dog Shows
The Dogpatch
Jim Rau Dog Shows

Other:

Pet Walk Rhode Island
Dog Parks
Digital Dog

... or search Google for additional dog related websites

Web PetEvents.org