Guinness World Records 2011 is just being released and has that answer and many more on pets. The Great Dane, George is 43 inches tall and weighs 245 pounds as of Feb. 15, 2010. He is the tallest dog in the world. He is owned by David Nasser of Tucson, Ariz.
There are 10 pages of records involving pets and other animals. It's a really entertaining book with a good layout with lots of fun pictures. Some highlights:
The tallest cat is a F1 Savannah named Scarlett's Magic measured 16.48 inches from shoulder to toe. This cat is supposed to be a sweetheart, according to her owners and can jump better than USA's basketball super stud Kevin Durant.
The highest jump by a dog: cleared by a dog is 172.7 cm (68 in), achieved by Cinderella May a Holly Grey, owned by Kate Long and Kathleen Conroy (both USA) of Miami, Florida, USA, at the Purina Incredible Dog Challenge National Finals, Gray Summit, Missouri, USA on 7 October 2006.
Longest jump by a rabbit: The world record of 9 feet, 6 inches was set by Yabo.
The fastest time to pop 100 balloons: Jack Russell Terrier, Anastasia, did it in 44.49 seconds on the set of Live with Regis and Kelly.
The oldest dog ever: Bluey, an Australian cattle dog, lived to be 29 years, 5 months. He was rescued from a puppy mill in 1939.
The oldest goldfish ever: Tish, won by Peter Hand at a fairground in 1956, lived for 43 years.
The longest goldfish: (Carassius auratus) is owned by Joris Gijsbers and measured 47.4 cm (18.7 in) from snout to tail-fin end on March 24, 2003 in Hapert, The Netherlands.
The oldest cat ever: Creme Puff lived with Jerry Perry in Austin, Texas for 38 years and 3 days.
Most Frisbees caught and held: Edward Watson threw seven flying discs and his dog Rose caught all of them and held them all in her month.
The fastest time a dog has unwound a non-electric car window: 11.34 seconds and was achieved by Striker, a border collie owned and trained by Francis V. Gadassi (Hungary). The record was set on September 1, 2004 in Quebéc City, Canada.
Most prolific chicken:A White Leghorn laid 371 eggs in 364 days at the College of Agriculture , University of Missouri.
Most expensive horse: The highest price paid for a thoroughbred at public auction is $16 million for a 2-year-old Colt who has yet to race.