Attempts have been made to teach a gorilla named ''Koko'' a form of [[sign language]], although this is highly questionable.<ref>As part of her research into animal communication in 1972, a young graduate student in developmental psychology volunteered to teach sign language to a 1-year-old female Gorilla named Koko. [http://www.las.uiuc.edu/alumni/news/fall2003/03fall_Patterson.html]</ref> | Attempts have been made to teach a gorilla named ''Koko'' a form of [[sign language]], although this is highly questionable.<ref>As part of her research into animal communication in 1972, a young graduate student in developmental psychology volunteered to teach sign language to a 1-year-old female Gorilla named Koko. [http://www.las.uiuc.edu/alumni/news/fall2003/03fall_Patterson.html]</ref> |