The Snake Can Detect Infrared Radiation

Until there were homonyms with eyes and nervous systems sufficiently like yours, even the most basic elements of the world didn't yet exist. There were likely things in its world, the allosaurus world, that you wouldn't have perceived at all. And vice versa. Because it's sense organs and nervous system were variations on the standard megalosaur model. While yours are variations on a radically different standard primate model.