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.
Borzoi
Stated life expectancy is 10 to 12 years. Median lifespan based on a UK Kennel Club survey is 9 years 1 month. 1 in 5 died of old age, at an average of 10 to 11.5 years. The longest lived dog lived to 14 years 3 months. Dogs that are physically fit and vigorous in their youth through middle age are more vigorous and healthy as elderly dogs, all other factors being equal. In the UK, cancer and cardiac problems seem to be the most frequent causes of premature death.