Dolphins and Aristotle

I was just looking over the parts of the Aristotle chapter about human nature, and how we act, in essence, like animals when we don't follow our reason. Our reason and intellect are what separate us from animals. So what about the fairytale story about dolphins saving people from sharks? What about the orca whale's ability to discover that great white sharks will suffocate if they get pinned upside down? (Yes it's true, National Geographic channel, the whale that ate jaws, greatest documentary ever created) While I understand that our ability to perceive hypothetical situations is part of what puts us apart from animals, I do not see a great difference in intelligence. I'm not trying to say that a whale or dolphin is as smart as us or anything ridiculous, but as humans, I think we put ourselves a little too highly in comparison with the other species of the planet. In the Aristotle chapter, acting "inhuman" (102) is equivalent to animal-like. (Again my own opinion, but that is the impression I get) This description is used for the third kind of undesirable life, "brutishness" (101). I am probably making a big deal out of an equivocation on the word 'inhuman', but as long as we believe in Darwin's theories, I think it may be important to remember that we evolved from the animals who we now condemn acting like. Just a thought.