According to the Guinness Book of World Records, the oldest dog to have ever lived was an Australian Cattle Dog named Bluey. He was born in 1910 and died in 1939. (Guinness tells us that Bluey’s owner had him put to sleep, but they don’t mention why. Though he could have lived even longer, we must assume that he was probably either sick or in pain, and his owner had to make a tough decision.)
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According to the Guinness Book of World Records, the oldest dog to have ever lived was an Australian Cattle Dog named Bluey. He was born in 1910 and died in 1939. (Guinness tells us that Bluey’s owner had him put to sleep, but they don’t mention why. Though he could have lived even longer, we must assume that he was probably either sick or in pain, and his owner had to make a tough decision.)
Bluey is an exception, though. On average, dogs live for 10–13 years, but there are plenty of variations among breeds. In general, small dogs tend to live longer than large dogs. (It’s thought that large dogs are more susceptible to diseases and other health problems because they grow so much faster than the smaller dogs.)
Some breeds are also more prone to illness than others, which shortens their average lifespan. Many of these issues can be blamed on the genetic traits for which the dogs have been specifically bred. Bulldogs, for example, are known for respiratory problems because of their shortened facial structures, while dachshunds are susceptible to back injuries because of their elongated spines.
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