To qualify as a Straight Egyptian, as defined by The Pyramid Society, a horse must be:
A Straight Egyptian Arabian horse is a horse that is registered or eligible for registration by a registry approved by the World Arabian Horse Organization (WAHO) and traces in every line of its pedigree to horses listed in The Pyramid Society Studbook for Straight Egyptian Arabian Horses Worldwide, ©2016, The Pyramid Society, Lexington, Kentucky, USA.
To be recognized as Egyptian-Sired, as defined by The Pyramid Society, a horse must be a purebred Arabian who is produced by breeding a Straight Egyptian stallion to a purebred Arabian mare who is not Straight Egyptian.
Prior to 2005, The Pyramid Society also recognized a category of horses as Egyptian-Bred or Egyptian-Related. As defined by The Pyramid Society, an Egyptian-Bred or Egyptian-Related horse was one who was produced either by breeding a Straight Egyptian stallion to a purebred Arabian mare who was not Straight Egyptian OR one whose grandsires were both Straight Egyptian, and whose dam was purebred Arabian who was not Straight Egyptian.
All horses born prior to 2005 and meeting the definition of Egyptian-Bred/Related are eligible for certain Society-managed programs through the remainder of their lifetimes. However, beginning with foals born in 2005, this category has not been recognized by The Pyramid Society. Horses fitting the description of Egyptian-Sired are recognized as such regardless of their birthdate.
Only horses of certifiable ancestry are eligible for classification as Straight Egyptian or Egyptian-Sired or Egyptian-Bred/Egyptian-Related as defined by The Pyramid Society, and for participation in Society-managed programs.