I spent three months in Tucson this winter. My favorite place to visit is the Arizona Sonora Desert Museum. It is a combination zoo, botanical garden, aquarium, mineral, and natural history museum.
They have several live animal programs throughout tthe museum that feature the animals of the Arizona Sonoran Desert. There is a live animal show in the theater every afternoon. They also have docents scattered through the museum with various live animals. There is also a program called Avian Adventures where you can interact with an owl and have it fly to your gloved hand.