Published 18 January 2017
You have to watch out when Keon the Irish wolfhound starts wagging his tail because it is a huge 76.8 cm (30.2 in) long.
The friendly dog has broken the previous record for the Longest tail on a dog, held by a fellow wolfhound, by just over 4.5 cm (1.7 in).
In order to get this record, Keon had to go to the vet to get his tail professionally measured.
Keon is an Irish name that means "courageous warrior", but his owner Ilse Loodts says that he is a gentle giant.
Guinness World Records recently visited Keon and his family in Westerlo, Belgium, to present the extraordinary canine with an official certificate and set up a photoshoot for the Guinness World Records 2017 Edition book.