A Lipizzan horse. The Y chromosome sequence that was needed as a template to detect Y variants in any horse was sourced from a stallion of this breed. Bob Haarmans

Almost All Horses Today Are Descendants of Arabian and Central Asian Stallions

New genetic analysis reveals the heavy role that human intervention has played in the development of modern horse breeds.

The thoroughbred American Pharoah won the Belmont Stakes and the first Triple Crown since 1978 at Belmont Park in 2015. Mike Lizzi
An Akhal-Teke stallion. Artur Baboev