Seriously one of the better zoos in the nation (I've been to maybe 10 all over the country). The exhibits are well done- very habitat specific for the animals at hand. I appreciated that areas of the zoo are divided by habitat/continent so as you walk around you feel like you are walking around the world. The nocturnal house is really cool and well done. But my favorite exhibit was the gorilla one. What majestic beautiful animals. I could spend all day watching them.
My major complaint about the zoo is the signage. I felt a little cheated on learning the natural history (being the wildlife dork that i am). There were docents (trained volunteers) walking around to answer questions though. The raptor show was a good addition too because it brought a message of local conservation to the public.
Since I don't have kids I did skip the petting zoo and the Zoomazium. I see in other reviews that people felt the Zoomazium is unsafe/pointless. I wouldn't be surprised if that was true but why focus on the rides or the Zoomazium when you have all this really neat wildlife to observe! If I had kids I definitely would bring them here. But even if you don't have kids, if you have any interest in animals this is a great spot to stop and check out.