The longest cat ever measured 48.5 inches (1.23 m) when fully stretched out.
Stewie, a gray tabby Maine Coon, holds the record for world’s longest domestic cat. His full name was Mymains Stewart Gilligan, and he measured 48.5 inches long (123 cm). That’s more than four feet long! Sadly, Stewie passed away in 2013 of cancer at only eight years of age.