Listed below are useful links to a variety of reliable websites.
The British Horse Society
A British charitable society that promotes knowledge about, and use of, horses and ponies.
American Trail Horse Association
http://www.trailhorse.com/
United States Trotting Association
http://www.ustrotting.com/
National Reining Horse Association
http://www.nrha.com/
National Snaffle Bit Association
https://www.nsba.com/
The Jockey Club
http://home.jockeyclub.com/
Masters of Foxhounds Association
http://www.mfha.com/
Irish Draught Horse Society
http://www.irishdraught.com/
American Shire Horse Association
http://www.shirehorse.org/
National Spanish Horse Association
https://www.ancce.es/en/
International Andalusian Lusitano Horse Association
http://www.ialha.org/
Gaited Horses.net
http://www.gaitedhorses.net/
Arabian Horse Registry
http://www.theregistry.org/Default.asp
World Arabian Horse Organizations
http://www.waho.org/
American Donkey and Mule Society
http://www.donkeys.com/ADMS.html
American Holsteiner Horse Association
http://www.holsteiner.com/
American Indian Horse Registry
http://www.indianhorse.com/
The International Morab Breeders’ Association
https://morab-imba.com/
Purebred Morab Horse Association
http://www.puremorab.com/
American Morgan Horse Association
https://www.morganhorse.com/
American Miniature Horse Association
http://www.amha.org/