Giraffes have the longest tails of any land mammal—up to 8 feet (2.4 meters)—but it's easier to think of the length of an animal's body in relation to its tail length, says Robert Espinoza, a biologist at California State University, Northridge.
Source : http://news.nationalgeographic.com/2016/04/160430-animals-science-longest-tails-reptiles/
