Chris had arrived at the sanctuary three years before, when he was just a 4-month-old infant gorilla.
Chris had needed a family just as much as Parry did. He had been given to a couple as a gift, and when the couple realized that there was no way they could raise a gorilla, they brought him to the sanctuary.
"Until [Chris] was 2 he was cared for by a team of caregivers and, because there were no other very young gorillas at the sanctuary at that time, he lived first with Cazza, and later with Daphne, both young orphaned chimpanzees," a spokesperson for the sanctuary told The Dodo.
So when Chris and Parry met each other, they both seemed to become a little bit more complete. They immediately started playing and wrestling with each other until they both collapsed with exhaustion.
And since then their games have only gotten funnier. Most recently, caregivers managed to film just some of their hijinks when the friends didn't even know they were being watched.