So we're not the only: - tool-using animal - fire-using animal - language-using animal - animal which domesticates other animals - animal which builds complex structures Aha! I know! We're the only animal which continually comes up with reasons why we're special.
For instance, on the planet Earth, man had always assumed that he was more intelligent than dolphins because he had achieved so much—the wheel, New York, wars and so on—whilst all the dolphins had ever done was muck about in the water having a good time. But conversely, the dolphins had always believed that they were far more intelligent than man—for precisely the same reasons.
Maybe one day we will be able to give them robotic limbs controlled through brain function and see if they able able to that utility. My guess is that we would be impressed, especially if the experiment were done on a pack.