Pictured Big John surrounded by smaller horses. A gigantic horse weighing 3,000lbs has struck an unlikely friendship with a tiny pony - who was saved from being slaughtered. See SWNS story SWSMhorse. Big John, a retired 24-year-old Belgian horse, is abnormally large for a horse of his breed and he's become best friends with Stardust, a Belgian Draft mare - now the pair are inseparable. Big John stands at 20 hands hall or 7ft - the average being 16 hands tall.