<P> This is a list of the oldest verified dogs in the world, listed by age, all of whom have attained the minimum age of 20 . Aging in dogs depends on breed, size and diet . </P> <P> The following dogs' ages were authenticated via Guinness World Records . A document is required by Guinness, such as a birth certificate, to prove his or her age . </P> <Table> <Tr> <Th> Rank </Th> <Th> Name </Th> <Th> Birth date </Th> <Th> Death date </Th> <Th> Age </Th> <Th> Breed </Th> <Th> Country of death </Th> </Tr> <Tr> <Td> </Td> <Td> Bluey </Td> <Td> 7 June 1910 </Td> <Td> 14 November 1939 </Td> <Td> 7004107520000000000 ♠ 29 years, 160 days </Td> <Td> Australian Cattle Dog </Td> <Td> Australia </Td> </Tr> <Tr> <Td> </Td> <Td> Butch </Td> <Td> </Td> <Td> 2003 </Td> <Td> ≥ 7004102270000000000 ♠ 28 years, 0 days </Td> <Td> Beagle </Td> <Td> United States </Td> </Tr> <Tr> <Td> </Td> <Td> Taffy </Td> <Td>--</Td> <Td>--</Td> <Td> 27 years, 317 days </Td> <Td> Welsh Collie </Td> <Td> United Kingdom </Td> </Tr> <Tr> <Td> </Td> <Td> Snookie </Td> <Td> 1 January 1991 </Td> <Td> 12 October 2018 </Td> <Td> ≥ 7004101460000000000 ♠ 27 years, 284 days </Td> <Td> Pug </Td> <Td> South Africa </Td> </Tr> <Tr> <Td> </Td> <Td> Bramble </Td> <Td> 1 September 1975 </Td> <Td> 31 March 2003 </Td> <Td> 7004100730000000000 ♠ 27 years, 211 days </Td> <Td> Border Collie </Td> <Td> United Kingdom </Td> </Tr> <Tr> <Td> 6 </Td> <Td> Adjutant </Td> <Td> 14 August 1936 </Td> <Td> 20 November 1963 </Td> <Td> 7003995900000000000 ♠ 27 years, 98 days </Td> <Td> Labrador Retriever cross </Td> <Td> United Kingdom </Td> </Tr> <Tr> <Td> 7 </Td> <Td> Buksi </Td> <Td> </Td> <Td> 26 August 2017 </Td> <Td> 27 years </Td> <Td> Mutt </Td> <Td> Hungary </Td> </Tr> <Tr> <Td> 8 </Td> <Td> Pusuke </Td> <Td> 1 April 1985 </Td> <Td> 5 December 2011 </Td> <Td> 7003974400000000000 ♠ 26 years, 248 days </Td> <Td> Shiba Inu mix </Td> <Td> Japan </Td> </Tr> <Tr> <Td> 9 </Td> <Td> Sugar </Td> <Td> 18 August 1952 </Td> <Td> 13 August 1977 </Td> <Td> 7003912600000000000 ♠ 24 years, 360 days </Td> <Td> N / A </Td> <Td> United States </Td> </Tr> <Tr> <Td> 10 </Td> <Td> Piccolo </Td> <Td> 1 October 1987 </Td> <Td> 26 December 2010 </Td> <Td> 7003848700000000000 ♠ 23 years, 86 days </Td> <Td> Mutt </Td> <Td> Italy </Td> </Tr> <Tr> <Td> 11 </Td> <Td> Chanel </Td> <Td> 6 May 1988 </Td> <Td> 28 August 2009 </Td> <Td> 7003778400000000000 ♠ 21 years, 114 days </Td> <Td> Dachshund </Td> <Td> United States </Td> </Tr> <Tr> <Td> 12 </Td> <Td> Otto </Td> <Td> 14 February 1989 </Td> <Td> 14 January 2010 </Td> <Td> 7003763900000000000 ♠ 20 years, 334 days </Td> <Td> Dachshund - Terrier cross </Td> <Td> United Kingdom </Td> </Tr> <Tr> <Td> 13 </Td> <Td> Seamus </Td> <Td> 24 July 1993 </Td> <Td> 18 May 2014 </Td> <Td> 7003760300000000000 ♠ 20 years, 298 days </Td> <Td> Toy Poodle </Td> <Td> United States </Td> </Tr> <Tr> <Td> 14 </Td> <Td> Sotirakis </Td> <Td> 11 April 1993 </Td> <Td> 16 January 2014 </Td> <Td> 7003758500000000000 ♠ 20 years, 280 days </Td> <Td> Stray </Td> <Td> Greece </Td> </Tr> <Tr> <Td> 15 </Td> <Td> Megabyte </Td> <Td> 11 April 1993 </Td> <Td> 1 January 2014 </Td> <Td> 7003757000000000000 ♠ 20 years, 265 days </Td> <Td> Chihuahua </Td> <Td> United States </Td> </Tr> <Tr> <Td> 16 </Td> <Td> Winston Rha </Td> <Td> 12 December 1992 </Td> <Td> 15 May 2013 </Td> <Td> 7003745900000000000 ♠ 20 years, 154 days </Td> <Td> Schnoodle </Td> <Td> United States </Td> </Tr> <Tr> <Td> 17 </Td> <Td> Willie </Td> <Td> 21 May 1994 </Td> <Td> 4 September 2014 </Td> <Td> 7003741100000000000 ♠ 20 years, 106 days </Td> <Td> Jack Russell Terrier </Td> <Td> United Kingdom </Td> </Tr> <Tr> <Td> 18 </Td> <Td> Scolly </Td> <Td> 15 June 1993 </Td> <Td> 18 July 2013 </Td> <Td> 7003733800000000000 ♠ 20 years, 33 days </Td> <Td> Dachshund </Td> <Td> Mexico </Td> </Tr> </Table> <Tr> <Th> Rank </Th> <Th> Name </Th> <Th> Birth date </Th> <Th> Death date </Th> <Th> Age </Th> <Th> Breed </Th> <Th> Country of death </Th> </Tr>

What is the guinness world record for the oldest dog