By Jess Hallas-Kilcoyne - Reining is a sport “designed to show the athletic ability of a ranch type horse in the confines of a show arena,” according to the AQHA Rule Handbook, and as such, the reining horse should be quick, agile, and light on his feet. “We need horses that are able to get low to the ground and come through themselves easily and quickly,” says top Canadian reining trainer, coach, and competitor Cheryl Mitchell, of Alberta. “That requires low-set hocks, short cannon bones, a strong hip, strong loin, and clean neck,” she continues, pointing out that these specific characteristics are also valued in working cow and cutting horses.