On our recent trip to the Pittsburgh Zoo and Aquarium we saw all three and much more. It was a perfect day for being out and about, the sun was shining, there was still gorgeous fall color, and being a weekday, it wasn't too crowded.
Lillian thoroughly enjoyed seeing all the animals, especially in the aquarium since she could be closer to them there. We thoroughly enjoyed her enjoyment.
The lion sleeps. Lillian is very good at roaring like a lion.
This rhino was pacing all over the place. 
In the elephant house we saw not only the big elephants, like this one, but also one of the baby elephants. I'm sad I wasn't able to get a good picture of the baby, he was soooo cute.
You may have to enlarge this photo to see the poison dart frog. He's right in the middle, black and gold. This is Pittsburgh you know.
It's impossible to not include a picture of the jellies. 
The penguins were having lots of fun swimming around. 
Isn't this guy just the greatest? He's a sea dragon.
