International Sheep Dog Society

United States Border Collie Handlers Association 

San Joaquin Valley Border Collie Association

Oregon Sheep Dog Society


Redwood Empire Sheepdog Association

Canadian Border Collie Association

Texas Sheepdog Association
 
Intermountain Stockdog Association

Mountain & Plains Border Collie Association

Border Collie Rescue of Northern California

Oklahoma State University Sheep Breed Pages

ISDS Border Collie Database (private, not affiliated with ISDS)

Mosquito and Vector Control Association of California

 

UCSF Canine Behavioral Genetics

 

COMMERCIAL SITES

 

Border Collies in Action

BorderSprings

 

Premier Sheep

 

Pipestone Sheep Supplies