So with my new enclosure that I am preparing I have used topsoil and spread grass seeds to be able to have a natural, constant food source. I have just started seeing little sprouts pop up and will be glad to move my Leopard into his new enclosure. One thing I was wondering, and thought might be an interesting topic, what does everyone think about growing their own grass in a soil that is fertilized with lime (calcium carbonate)? This way you would be able to provide a natural source of calcium positive food. I doubt I am the first person to think of it but I was wondering if anyone had any success with this idea