:I don't have a problem with the concept that the snake was more comfortable before the cage change was made. My issue is the anthropomorphic idea that a snake can "miss" its former substrate.
This is so far down you probably won't see this reply, but... There was no anthropomorphising in this thread. You read that into it. My statement was that black milks don't deal well with change, and that, in my experience, changes in cage furnishings and substrates cause unnecessary stress on these animals, leading to odd behaviour (usually poor feeding response).