[Article] The last distinction? Talking to the animals Adjust Share By Benjamin Hale, This article is only available as a PDF to subscribers. Download PDF Tags 20th century Chimpanzees Herbert S. Terrace Human-animal communication Learning in animals Nim Chimpsky (Chimpanzee) Psychology Sign language United States Washoe (Chimpanzee) More from Benjamin Hale King James, Revised History’s best seller turns 400 Adjust Share