The researchers found Burmese and Birmans live the longest, with an average of 14 years ... An owner may assume their shelter cat with silvery fur is a Russian Blue, for example, when it's ...

finding that overall cats had an average life expectancy of around 11.7 years. They also found that crossbreeds lived slightly longer than pedigree cats on average - 12.5 years and 11.2 years ...