The exact day of Guy's birth was unknown, but his official birthday was set by the Zoo as May 30, and he received large numbers of cards each year.

The Paris Zoo Director sent instructions to their game department in West Africa to find a suitable female to mate with him.

When the new Ape and Monkey House, the Michael Sobell Pavilion, was opened in 1971, Guy and Lomie were finally introduced.

[1] His appearance was fearsome, yet his nature was very gentle; when small birds flew into his cage, he was often seen to lift them on his hands and examine them softly.

[3] English musician David Dundas released his album Vertical Hold in 1978, which featured a song devoted to "Guy The Gorilla".