Marble used to be very attached to her hides. Now, she's only in them if it's cold or if I have people over. Even after a feed, she goes to the half-log instead of her old favorite, the rock. I think she's just comfortable? Like she doesn't feel a need to hide because there's no threat. On the other hand, she was half the size of her clutchmates when I bought her, though the breeder told me they all hatched around the same time. She was 20 bucks, and expected to live a few months. She turned 1 in July.