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.
Brown bear
While male bears potentially live longer in captivity, female grizzly bears have a greater annual survival rate than males within wild populations per a study done in the Greater Yellowstone Ecosystem. Annual mortality for bears of any age is estimated at around 10% in most protected areas; however, the average annual mortality rate rises to an estimated 38% in hunted populations. Around 13% to 44% of cubs die within their first year even in well-protected areas. Mortality rates of 75–100% among the cubs of any given year are not uncommon. Beyond predation by large predators including wolves, Siberian tigers ("Panthera tigris altaica") and other brown bears, starvation and accidents also claim the lives of cubs. Studies have indicated that the most prevalent source of mortality for first-year cubs is malnutrition. By the second and third years of their lives, the annual mortality rate among cubs in the care of their mothers drops to 10-15%.