After publishing  Pain and Lameness in Competition Horses, I was contacted by Sue Dyson to collaborate on a follow-up piece with emphasis on what a pain-free horse should look like. This article, published in Horse Sport in January 2025, discusses Dyson’s past and present research to quantify how a pain-free, stress-free horse should move and behave – which is the closest we are to understanding whether or not horses are happy being ridden.