Horse
Depending on breed, management and environment, the modern domestic horse has a life expectancy of 25 to 30 years. Uncommonly, a few animals live into their 40s and, occasionally, beyond. The oldest verifiable record was "Old Billy", a 19th-century horse that lived to the age of 62. In modern times, Sugar Puff, who had been listed in "Guinness World Records" as the world's oldest living pony, died in 2007 at age 56.
List of leading Thoroughbred racehorses
Most race horses and race winners are male horses (either intact males or geldings). While male and female horses do not exhibit sexual dimorphism as obviously as human athletes, male horses are considered more aggressive racers and generally have a significant competitive advantage. At the highest level of racing though, intact males have great economic value at stud, so they are often retired after only a few years of racing. In part because they may have longer racing careers, some of the most winning racehorses of all time are females, including Kincsem, Black Caviar, Winx and Zenyatta.