Let me come back to my original sentence:

only humans have been able to build stuff to cross the limits of their own beings.

Maybe you did not get what I was pointing at. I'm not just talking about mere tools, I'm talking about building stuff bigger than us or making it possible for us to live in otherwise unlikely environments. We have planes, rockets, satellites, submarines, boats. Crows don't go under water and chimpanzees don't fly over our heads. There's clearly a difference in the animal realm between what humans and other animals are able to achieve, and this, in the very same evolution time/space.