You sure they exhibit this species?
Here is a list of rare animals I know
Lupa Zoo- Northern tamandua, Three-striped night monkey
Maine Wildlife Park- Albino American porcupine, some nocturnal creatures which I don't know
Center for Wildlife, Cape Neddick ME- Eastern gray squirrel, Big brown bat
Squam Lakes Natural Science Center- White-footed mouse, have heard that wild Muskrats can been seen here.
Stone Zoo- Markhor, Ringtail
Animal Adventures- Agile wallaby, Carpathian lynx
Zoo in Forest Park- Indian muntjac, Western bobcat
Mystic Aquarium- Steller's sea lion
Eleanor Buck Wolf Nature Center- White-footed mouse
Ansonia Natue Center- Little brown bat
Earthplace- Big brown bat
Roger Williams Park Zoo- Pronghorn