The foundation is affiliated with a number of animal sanctuary groups including:
Global Federation of Animal Sanctuaries
International organization for establishing and recognizing highest standards of nonprofit sanctuary operation. Horse Harbor earned accredited status originally in 2010, the first on the West Coast to do so, and is still one of only 24 in the U.S.
Washington Federation of Animal Care and Control Agencies
The state’s umbrella group for nonprofit animal rescue and sanctuary organizations, and is active in legislative affairs concerning animal welfare.
Washington Horse Defense Coalition
An organization dedicated to ending equine slaughter in Washington and the rest of the U.S. Horse Harbor’s Allen Warren is a founder and Chairman of the Board.
Canadian Horse Defense Coalition
Canadian organization dedicated to ending equine slaughter. Horse Harbor is the only U.S. equine rescue sanctuary recognized by this organization.