This post will contain the location of the rare Okapi. The Okapi can only be found in a certain location (according to Ocelote). It is highly recommended that you use D-Dog when you wish to find animals as he will automatically mark them from far away.
Where to find an Okapi
An Okapi can be found in Angola at the location shown in the video below. It will wander the area so use D-Dog or binoculars to find it.
If you are unable to view the video, here is a picture of the area where the Okapi wanders.