It still separates us from them by factors of intelligence, emotions, language. Man is far more advanced than animal by these standards. For example, we as humans have the ability to disect and understand language of not only our species (English, Japanese, Chinese, French, etc.), but those of other species as well. That's pretty incredible when you account that many species can't even decipher the language of their relatives (like parakeets and penquins), let alone other species. And not too mention, our emotional states are far more advanced, as well as our intelligence...well, dolphins are pretty damn smart too...but are they smart enough to rule the waters the way man has ruled land?