T’hyrma, though they don’t have actual eyes, still get a pretty clear picture of the world around them.  They “see” through the infrared sensor pits on their faces, which is what I was going for in the last panel there.  It’s obviously set up for hunting more than anything else, but they can still “see” objects that don’t give off heat.  Just not as well.  In addition to the infrared they rely just as heavily on their sense of smell, which is quite good but not something I can convey easily in an image.