Rubble's owner, Michelle Foster, is very lucky her furry friend has stuck around for so long... Indeed, her big Maine Coon just celebrated his 31st birthday! That's more than 100 in "human years."Posted by CGTN on Tuesday, June 5, 2018She remembers her 20th birthday, the day they first met, quite clearly. He was part of a litter of cats that my sister’s friend had, and I had just left home,” she explained. “I was lonely living on my own so got him in as a kitten. He is very loyal. We used to live in London and moved around a lot.Michelle adopted Rubble at birth, in 1988, in Britain. Since then, he hasn't left her side. An exceptional story, knowing that a cat's life expectancy is, on average, fifteen years. Needless to say, this cat has defied all odds.Michelle Foster revealed the secret to her cat's longevity to Cole and Marmalade magazine:If you care about something and someone and really love them, that goes a long way. I have always treated him like a child – I don’t have any children and had another cat called Meg – who passed at the age of 25. If you care about something, no matter what it is, it does last.So, is love the secret to a long and peaceful life? Although Rubble is the oldest "living" cat in the world, he doesn't hold the record. Creme Puff is the oldest cat in the world, with a record of 38 years. Amazing!