However language does seem to define our uniqueness. We share most of our DNA with other species, but not most of our language.

Tell that to my cat, Mousetrap! She has a giant (IMO) vocabulary of sounds and "words." She can hold entire conversations. I'll reply with "you don't say," and she will just keep on talking. It's a hoot. She seems to really need to express herself this way - it's almost musical the way she pitches her voice and the pattern is very conversational.

Karen