when the Kentucky Derby shines a global spotlight on equine athleticism. It’s the subject of a growing body of research that cites a constellation of characteristics: big hearts, immense lung ...

Horses honed skills such as running, jumping and pulling as humans bred and trained them for various purposes over millennia.

The whole world will have the chance to see horses in action here Saturday, when the Kentucky Derby shines a global spotlight on equine athleticism. It’s the subject of a growing body of research that ...