Please note: The Great Ape House will be closed to visitors on Thursday, April 3.
Due to technical difficulties, we cannot process online payments. Free Entry Passes are still available and visitors may purchase Parking Passes at the Zoo (subject to availability).
They’re goofy, sweet and superstars at training — meet Ronnie and Bradley, the Smithsonian’s National Zoo’s siamangs! These apes may be small in stature, but their endearing personalities (and booming calls) make their presence felt far beyond Gibbon Ridge.