In studying up on Bull Snakes, I had read that they like to burrow in their substrate. When I first set up Alice’s habitat, I used one 8qt bag of aspen shavings. I thought it looked nice and would give her enough to dig around in. This is a 4′ x 2′ habitat and that provided a little less than one inch of depth to the substrate. The package of aspen shavings (Zoo Med) suggests a depth of two inches or more. When I disinfected her habitat last week, I decided to try using a thicker layer of substrate to see if Alice would enjoy it. I used 2.5 of the 8qt. bags of aspen shavings this time. She ended up with a full two inch depth to the substrate throughout the habitat. She has tunneled all over the place. Obviously way more interesting to her than the thinner layer.
I also bought Alice a new hide to replace one of her hides she rarely uses. Her favorite is a large Exo Terra Rock Outcroppings. I bought a medium Exo Terra Reptile Cave thinking it would be cozy for her at her close to three foot in length and that she would like it. I seem to have missed the mark on the size and her preferences. From her lack of interest in it, I would say that Bull Snakes, or at least Alice, prefer a roomier hide to curl up in. Her Rock Outcroppings that she likes so much is a large size and has plenty of room for her to move around in. I will look into getting a large or extra large Reptile Cave to replace this one.