Information from: Reno Gazette-Journal, http://www.rgj.com
This cat from Reno, NV beat out the previous Guinness record holder by 1/2 an inch, coming in at a total of 48 1/2 inches.
From the Article:
“A Reno cat has broken the Guinness record for world’s longest domestic cat. The Reno Gazette-Journal reported that a 5-year-old Maine Coon named Stewie measured 48 1/2 inches from the tip of his nose to the tip of his tail bone. Robin Hendrickson and Erik Brandsness purchased the cat from a breeder in Hermiston, Ore., in 2005.”