Another reviewer suggested that the animals might be drugged -- I don't think so!
When we were there we saw Tigers play-fighting and making whoopie. They were pretty dang active if you ask me. You must remember that all cats big and small sleep a lot. They may be sleeping when you go, but that's like their natural state! We saw baby White Tigers. The most adorable site ever. The enclosures for most of the animals were fairly spacious compared to what I've seen at Zoos. You must remember that cats are good jumpers so they are usually in something with a roof for safety.
The dolphins were awesome and you can get really close to them. The trainers will have them jump and do tricks if you wait at the first pool a few minutes. Also, you can watch them from underwater too.
I have been twice now and still enjoy it.