This document discusses the origins of human language and compares animal communication to human language. It explores several theories for how language originated, including that language developed for social interaction and tool-making around 100,000 to 50,000 years ago. Key differences between animal communication and human language are also outlined, such as displacement, arbitrariness, productivity, duality of patterning, and cultural transmission in human language. While animals can be trained to respond to words, they do not truly understand what words mean like humans. The origins of language and differences between animal and human language systems are complex topics that researchers continue to study.