Amazing Dog World Records : Guinness World Records

Longest tongue current - dog 

The longest tongue on a dog measures 11.43 cm (4.5 in) and belongs to Puggy, a male Pekingese owned by Becky Stanford (both United States). The measurement was taken at Avondale Haslet Animal Clinic, Texas, United States, on 8 May 2009, when Puggy was 9 years old.

 

Tallest living dog 

The tallest dog living is 'Giant George' a Great Dane, who measured 1.092 m (43 in) tall on 15 February 2010 and is owned by David Nasser of Tucson, Arizona, USA. 

Smallest dog living (height) 

The smallest dog living, in terms of height, is a long-haired, female Chihuahua called Boo Boo, who measured 10.16 cm (4 in) tall on 12 May 2007 and is owned by Lana Elswick of Raceland, Kentucky, United States.

 

Longest ears on a dog - ever

The longest ears on a dog measured 34.9 cm (13.75 in) and 34.2 cm (13.5 in) for the right and left ears, respectively, on 29 September 2004. They belong to Tigger, a bloodhound, who is owned by Bryan and Christina Flessner of St Joseph, Illinois, USA.
Tigger has won many show titles and over 180 Best of Breed awards. He was inducted into the Bloodhound 'Hall of Fame' in 2003.
Unfortunately Tigger passed away in October 2009.