Humans understand speech through two mechanisms: vocabulary and intonation. Words are the basics of human communication, and intonation is a factor that specifies what intention is being conveyed in words. For example, people tend to speak in higher and more varying pitch when they praise someone. However, a recent study from the American Association for the Advancement of Science has shown that these are not unique to humans; dogs also depend on those two mechanisms. They have found from the analyzation of dogs’ brain activity that dogs react differently to human speech depending on what words and intonation are being used. Furthermore, it has been discovered that dogs process human speech through brain regions similar to those that humans use. Researchers believe that humans are only unique in their ability invent words.
Original artical: https://www.sciencedaily.com/releases/2016/08/160829192701.htm