Adopt a Gorilla or Golden Lion Tamarin.

Human Origins Program at the Smithsonian's Museum of Natural History.

Bring Back Bison

Let's bring bison back to our Zoo!

Great Apes & Other Primates


Five western lowland gorillas live at the Great Ape House. Visitors can see them every day. The youngest is Kibibi, born in 2009.

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Watching golden lion tamarins: You are viewing an enclosure in the Zoo's Small Mammal House where a pair of golden lion tamarins (GLTs) lives. Tune in Wednesdays at 11 a.m. Eastern Time to see the GLTs get an enrichment item. You may see other animals that live here too, such as a pair of saki monkeys, sloths, or an acouchi. There are only about 1,500 GLTs in the wild. For decades, Zoo scientists have collaborated with conservation organizations to help save from extinction these endangered monkeys.

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Primates at the Zoo


The Zoo is home to many primates. Orangutans and western lowland gorillas can be found at the Great Ape House. Smaller primates, including golden lion tamarins, Geoffroy's marmosets, and howler monkeys, can be found in the Small Mammal House. Look for gibbons at Gibbon Ridge and lemurs at Lemur Island. Find out where primates can be seen at the Zoo.

On mild days, the orangutans can sometimes be seen overhead as they travel along the O Line between the Great Ape House and Think Tank.

About Primates

There are 376 species of primates in the world—from humans and apes to monkeys and prosimians ("premonkeys").

The smallest primate is the pygmy mouse lemur, which can fit in the palm of your hand. The largest—the gorilla—can weigh more than 400 pounds. Most primates live in warm climates, and most depend on forests for their survival. More Primate Facts