Cool. Though I don't really know what your intent is for these, I would give the second and third the best points for use of texture and line, along with a good lighting mix...the light and dark areas of those keep the visual tension and eye moving to investigate.
Though the first, with the cat, does have a certain darker mystery to it that creates a good narrative or visual story.
Critiques in grad school are a constant, so my reply is shaped by how I was taught to respond to work in class by other photographers...Keep up the work. I will have to figure out how to post images as you have, so I can likewise post. (but in an off ST topic area...lol)