In my opinion there should have been a primate species there from the beginning but maybe Snow Leopards fitted better with the whole "Himalaya concept" in order to obtain the grant?
this has probably been discussed before but I can't remember (so apologies if it has) -- but I thought it was called Himalaya because of the snow leopard enclosure? Was it in fact the other way around, that the concept came first and they chose the leopards to fit?