The cecum is a blind sac or pouch, that is present at the junction of the small and large intestines. The food material that can be broken down further, mainly soluble fiber and proteins, moves into the cecum. The cecum has 10 times the capacity of the stomach of the rabbit. Here massive quantities of bacteria and microorganisms reside. The bacteria turn the indigestible fiber into digestible nutrients which are directly absorbed across the wall of the cecum for use by the animal, while others are excreted.