What is the purpose of a rabbits appendix?

The appendix in rabbits, often referred to as the cecal appendix, plays a crucial role in their digestive system. It houses a large population of bacteria that assist in breaking down fibrous plant material, aiding in the fermentation process. This adaptation allows rabbits to extract more nutrients from their herbivorous diet, contributing to their overall energy and health. Additionally, the appendix may help in the immune response by producing certain immune cells.