If you look carefully at the enlargement, you may be able to see Muffet the Yorkie enjoying the atrium in the "outdoor" part of his run.
He's the little yellow-grey blur between leaves almost at the center of the picture.
I am not sure what the woven bird nests hung among the plants are for, because all the birds are kept in cages.
Here's a view from the break room upstairs, rather blurry through its railing and the double-glazing, into the front greenhouse, which is plants only.
Back in the main greenhouse, the future: