@snwoleopard. You're right, and it is bigger than you can see on the picture. It has no moat and a big pool. But I can't understand,why most zoos in the states building elephant houses which are not open to the public,Saint Louis has a cold winter with snow, but in this time, the people can't see the elephants, hippos and rhinos.
I personally am really looking forward to when Bulls like Sabu and Raja become 30 -year old or so bulls they look very musculine now. Raja's father Onyx aka Big Mac from what I have seen was a huge bull with great tusks had a great appearance of his head.