EMBARGOED TO 1600 THURSDAY APRIL 28 File photodated 06/03/20 of Molly, an English Bulldog. According to the research, Jack Russell Terriers had the greatest life expectancy at 12.7 years, followed by Border Collies (12.1 years) and Springer Spaniels (11.92 years). our flat-faced breeds were found to have the shortest life expectancy with French Bulldogs only expected to live 4.5 years, followed by English Bulldogs at 7.4 years, Pugs at 7.7 years and American Bulldogs 7.8 years. Issue date: Thursday April 28, 2022.