as already mentioned, zootierliste is not run by the zoos, it is a website run by zoo enthusiasts. It is edited according to what those zoo visitors see or hear when they visit the zoos.
You think as you are very smart.
And you know at all how many indigenous taxa gazelle in Yemen?
Gazella erlangeri - matter of fact it is not the only one that has in Yemen original habitat.
Gazella bilkis and Gazella cora there are also species native to Yemen.
And please you really should read this really a PDF file, and then evaluate it.
I know it is very lengthy; but just due to the fact that you will find answers to questions; you have daubed the picture of gazelles. And if ever you stand, the real truth about it.
Keep in mind, however, that the former species Gazella arabica is only a chimera.