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.
Primonetta
Primonetta died of a heart attack on January 16, 1993 at Darby Dan Farm, less than a month before her thirty-fifth birthday. She is recognized as one of the longest lived thoroughbred racehorses ever, and is the third longest lived filly known to horse racing after Stay Out Front (February 28, 1966 - December 15, 2001), who lived to 35 years and 9 and 1/2 months and Heartake (May 22, 1973 - April 8, 2009), who lived to 35 years and 10 and 1/2 months.