article_snippet: So much so in fact that one named Koko was able to learn a subset of sign language.
article_snippet: Captured at Busch Gardens in Tampa, Florida, US, one cheeky gorilla can be seen interacting with an older blackback.
article_snippet: The video maker and the surrounding people can be heard laughing in shock at the cheeky gesture being made by the large mammal.
article_snippet: To the surprise of the group of people behind the camera
highlights_snippet: The hilarious incident took place at Tampa's Busch Gardens wildlife park .