In this marvelous book Smuts draws from years of painstaking field research in which she followed around a flange of chacma baboons in the Mateti Game Park in Zimbabwe. Her findings inspired the plot of When Harry Met Sally.
Fair enough, and if the film link's true a nice bit of trivia. But here's another bit of trivia: the collective noun for baboons is a congress. A flange of baboons was invented by scriptwriters on the seminal British TV comedy show Not The Nine O'Clock News for a classic sketch, 'Gerald the Gorilla' (yes, really). A fine case of fiction trying to become fact?
Gerald would have approved.
Isn't the net wondrous – I googled Not The Nine o'Clock News and found a youtube video on the Gerald sketch. Enjoy!