Which dog has longest lifespan

Jack russell terrier 12.72 years.The oldest chihuahua on record, megabyte, died at the age of 20 years and 265 days.Those who are looking for an answer to the question «what dog lives the longest life?» often ask the following questions:The chihuahua is popularly known for being among the world's smallest dogs.Although tiny and adorable, chihuahuas are known to be miniature guard dogs.

However, some dogs have stayed alive and continued to thrive for much longer.Toy poodle yih chang chew / eyeemgetty imagesAmerican alsatian this interesting large dog breed is being developed to look like the dire wolf, an extinct animal that roamed the paleolithic countryside and feasted on the strange wild animals of that time.Females of this breed tend to live one year longer than their male counterparts, but all maltese pups are expected to have long lifespans.Dogs don't often live to 20 years of age, but history has taught us that it is possible.

The second oldest dog to have lived is a beagle named butch, who reportedly lived for 28 years from 1975 to 2003.This elegant breed, which has an average life span of 12 to 15 years, has been around for 28 centuries.The average lifespan of a dog is between ten and thirteen years.Living from 1975 to 2003, butch once held the record for longest living dog in the guinness book of world records until his passing.The following are life expectancy averages of specific small dog breeds.