Humans\' unique language ability (Introduction)
The trained animals who have some language also own a huge gap in language usage.-http://www.bbc.com/future/story/20121016-is-language-unique-to-humans-We are different in kind, not degree.
Humans\' unique language ability
Babies can learn two languages at the same time:-http://www.sciencedaily.com/releases/2013/02/130214111606.htm-The theory that babies have built in language ability from birth seems true