Why Not? After all, the zebras in the Gaza Zoo are actually donkeys with stripes painted on them. :-)
It occurred to me that, since the article mentioned a long sojourn there by Hadrian, that this might be Antinous, but I guess not.
http://www.shafe.co.uk/crystal/images/lshafe/Antinoos.jpg
http://jeannedepompadour.blogspot.com/2013/03/ancient-roman-hairstyles-and_5.html