Digestive system

 

The okapi's digestive sytem is unique to many other mammals' in that it's designed to break down their diet that consists of virtually nothing but leaves.  The system is intricate enough to break down the various types of leaves okapis consume (meaning cellulose,) but isn't built well for breaking down sugars.  Because their digestive system is tailored for their specific diet, okapis can defecate from once a day to going an entire month without having to.  This also helps cover their tracks, what the okapi is best known for.

Like a cow, okapis are ruminant, meaning they swallow and regurgitate their food so they can chew it many times.