Does anyone know if any of the exhibits are closed or what time seems best to see the most animals?

I'd say about 3-5 pm is best. Closer to 5. Bc for most of the year ( besides the festival of lights ) that is closing time & most likely feeding time......so the animals can go back into their enclosed places. They are really active. & Most likey bc there is not a ton of people or kids . Even in the heat of the summer....... I go there alot in the afternoons , & most of the animals. Big cats, giraffes, etc; are really active

I completely agree with Pablo.