Fun place to bring the kids and the family. Parking was super crowded on the summer weekends. I would recommend taking the tram in, if you parked too far away. I would also recommend taking the tram up the top of the primate/aquarium exhibit at the top. It does seem that bad until it gets too hot. The primates are able to change cages with the one next door. Luckily it was cooler inside.
Animals like the wallaby were so hot they were just lying down, in active,
The zoo has a lot of property, unfortunately it's quite spread out with lots of unused space in between. There's a new elephant exhibit that will be coming out shortly.