In WoW Classic, at part Horde Part 3 (132/619), it says that Stranglethorn Fever (a repeatable quest) needs 1 Gorilla Fang.
In fact, this quest needs 10 Gorilla Fangs, see attached picture.

Addon: WoWPro 2024.09.25.C
WoW Client: 1.15.4.56817

Do with this info as you see fit. At least I said something :)

Thanks for an awesome addon. Now I can REALLY relax when playing WoW 👍

Thank you for this report, i will make the authors aware

It was reduced to 1 in TBC. I will update the guide accordingly.