Digit has lived with the couple nearly all of her life.While she has learned to become more independent, the gorilla still occasionally relies on her adoptive human parents to help pick food out of her teeth or pull a splinter out of her hand, Mr Thivillion says.
The Thivillions, who do not have children, took Digit in to their home after she was abandoned as a baby.
According to Daily Mail, until she was a teenager - by which time she weighed nearly 13 stone - Digit would try to share the bed with her owners, who live in hills west of Lyon, France.
They bottle-fed, raised and even house-trained Digit, who lives in his own spacious enclosure connected to the home.
We cannot leave Digit overnight with anyone else, which means we haven’t be able to go out for 13 years,’ he said back in 2013.
‘We haven’t had a holiday, or a night away. We haven’t been to the cinema, the theatre, or out for dinner. It would make Digit sad if we weren’t here, and if she is sad we are, too.’