The National Zoo exhibits many wonderful mammals, both large and smal

The Great Cats exhibit on Lion/Tiger Hill features Sumatran tigers and African lions: living, breathing, roaring great cats. They are ambassadors for their wild relatives, and for the Zoo’s conservation and science initiatives for tigers, lions, and many other cats, which, even if not great in size, are still great!l

Great apes and other primates can be seen both indoors and outdoors in several locations at the Zoo. The Great Ape House is home to western lowland gorillas and orangutans. The house is about mid-way on Olmsted Walk, between the Small Mammal House and the Reptile Discovery Center. Think Tank is home to Sulawesi macaques. See the table below for all the Zoo's exhibits where primat

African Lions: http://nationalzoo.si.edu/Animals/GreatCats/Lions/MeetLions/default.cfm
Tigers:   http://nationalzoo.si.edu/Animals/GreatCats/meettigers.cfm
Cheetahs: http://nationalzoo.si.edu/Animals/AfricanSavanna/meetcheetahs.cfm
Gorillas: http://nationalzoo.si.edu/Animals/Primates/MeetPrimates/MeetGorillas/default.cfm
Orangutans: http://nationalzoo.si.edu/Animals/Primates/MeetPrimates/MeetOrangs/default.cfm
Lemurs: http://nationalzoo.si.edu/Animals/Primates/MeetPrimates/MeetLemurs/default.cfm  
es can be found.