Well, let's see. Our bones are made of metal, and not just any metal, either, metal that gets stronger each time you break small pieces of it (we can get tough enough this way to collide with a brick wall at 35 miles an hour and only sustain a light bruise); we see in color, and have among the best endurance of any land animal. One of our original hunting tactics was to simply start walking at our food and just keep going until it couldn't run away anymore (in fact, this is still done in some regions of Africa). It'd be funny if we got into space and everyone else is living on planets with less than 1G and humans are the toughest, most adaptable life form out there.

We also do a couple of things no other animal (on Earth) does: first, we emit pheromones and have body language that turns animals into our slaves, often without us trying to (see cats; all joking about "lol cats own yu" aside, we domesticated cats on accident). Second, our young learn to point without having to be taught. This ties into our last unique thing, which is culture. No other animal on Earth has culture (specifically, our capacity to classify and represent experiences with symbols).

Humans are pretty awesome.