Did you even try
Google? It's merely one of what they call "search engines", which enable you to find information on the web.
Seriously, I imagine a lot of people here are a lot like me; "armchair" biology fans. You may wish to speak to a comparative zoologist with a specialization in ungulates. Also okapi aren't particularly on-topic for this thread.
(From what I've seen of okapi it seems like they could be some kind of giraffe predecessor, or at least a more direct decendant of their common ancestor. Of course, I have no evidence beyond visual similarity to make such an assertation. Merely a suggestion to a line of research inquiry.)
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