I understand your point, GDR, and I suppose if we were a cat or a snake or a bat, 'reality' would be completely different.
As crash points out, we have a remarkable talent for finding out more of reality than our senses allow for. We have heat seeking devices, and devices which allow us to hear otherwise inaudible frequencies. We can go to the bottom of the ocean, we have microscopes and telescopes and infrared cameras. There are probably more 'realities' out there, but chances are we can find 'em. :)