Florida: Toby is 21 years old. But there has been no loss of strength and sound. Toby, who holds the record of being the oldest dog in the world, is as agile and courageous as a young dog of his breed.
Born on 9 January 2001, he lives in Florida with his owner Gisela Shore who adopted him from an animal shelter where she volunteered when he was just a few months old.
He originally belonged to an elderly couple who called him Peanut Butter but after they weren't able to look after him any more Gisela gave him a new home - and changed his named to Toby Keith.
Most dogs live between 10 and 13 years, but chihuahuas often life longer with a typical life expectancy of 12-18 years.
As Toby Keith had been part of the family for such a long time Gisela and wondered if he might have set some kind of record for doggy age.
She contacted Guinness World Records and, once his record was officially confirmed, Gisela celebrated with family and friends. It wasn't just the humans celebrating either. TobyKeith got a bath, his nails trimmed and went for a car ride as a special treat.
He isn't Gisela's only pet pooch - she also has two other dogs; Luna, a seven-year-old American Bulldog and Lala, a three-year-old Chinese-crested. We wonder if they can also match TobyKeith's record - if so, they have a long way to go!