Orix are highly skilled in finding water and they dig for it in dry river beds. If they can't drink plain water, they can get it from their food (including things such as wild melon). It is believed that the Oryx may have given rise to the myth of the unicorn, since from the side it sometimes appears as though it only has one very long spiral horn. Just like in this picture.
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See the
Kenya map with a complete picture set.