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.
Marco Polo sheep
Marco Polo sheep have an average life span of 13 years. The horns develop rings each year by which the age of male animals may be determined. Since females do not have horns, it is harder to determine their age.