BRANDYWINE! They seem particularly dedicated to their master, as well. The tiny zoo has dwindled down to bare bones, with species being rehomed to make room for construction.
Before the recent opening of the Madagascar exhibit, the zoo was down to:
Mammals: bobcat, serval, red panda, NA porcupine, capybara, golden lion tamarin, white-faced saki, goats, alpacas
Birds: Andean condor, bald eagle, raven, sandhill crane, scarlet ibis, toco toucan, burrowing owl, a few ducks and small parrot species
Plus wallabies and alligators temporarily.
The master plan more than doubles the size of the zoo, turning it from a straight line with a cul-de-sac to a big loop. Along with the lemurs that were part of the last phase, new species will include jaguar, snow leopard, canada lynx, bat-eared fox, sloth bear, spotted hyena, NARO (one of the species that left), pudu, markhor, red river hog, siamang, colobus, and several others. I've heard they're trying for even more than the master plan shows, rather than less. The otter exhibit is going to have a slide for humans to go through a tunnel in the exhibit.
Current map:
Master:
Webpage for plan:
Our Zoo Re-imagined • Brandywine Zoo • Go a Little Wild
Phases:
https://brandywinezoo.org/wp-content/uploads/2020/02/Phases-of-the-Master-Plan.pdf
They're getting ready to start phase 3.