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.
Old English Sheepdog
US and UK surveys put the average lifespan of the Old English Sheepdog at 10–11 years. The Old English Sheepdog Club of America sponsors investigations into diseases encountered in the breed in order to assist breeders in selecting healthy dogs for breeding, and breeders of Old English Sheepdogs who are members of the Old English Sheepdog Club of America must support its Code of Ethics in breeding and selling sheepdogs. Some diseases being investigated include hip dysplasia, cataracts, glaucoma, entropion, thyroid problems, deafness, diabetes, HD, PRA, allergies and skin problems. There is no data on how many dogs are affected, or what percent of the breed is affected by any of these ailments. Heatstroke is also a serious concern in full coated dogs. Cancer is a major cause of death amongst Old English Sheepdogs.