Chihuahuas live to be about 15-18 years old if they get lots of exercise and healthy food.
beagle
the rare Mexican breed, the Xoloitzcuintle and the Chihuahua breed each live very long but im not sure which one lives the longest. soz
Some dogs can live 20 years and not more then 20 years, but some d0gs only live up to 15 years, some can live 10 years, it depends on 1 to 20 years.
Probably the bull mastiff
A dachshund is a pure breed, not a mix, and one of the oldest dog breeds there is.
The oldest breed of a beagle would be 46 years old
The oldest North American dog breed is believed to be the Alaskan Malamute, which is a breed that was developed by the native Inuit people in Alaska for sled pulling and hunting. It is a strong and resilient breed known for its ability to withstand harsh Arctic conditions.
All dogs live 10-15 years, so there is no "Oldest" dog.
The oldest breed of domestic dog is believed to be a close relative to the greyhound and Pharaoh hound.
Most purebreeds, by design (read: inbreeding) won't live as long as your more hardy mixed breed. If you want a long-lived dog, you're better off with a mutt.
Afgnew Hound :)
Yes, depending on the dog breed.