You will come to know that the Smithsonian National Zoo is among the oldest zoos is America, and the only one in Washington DC. You will find here 2,000 animals from 400 different species from all over the world (many of them endangered), which are divided into more than a dozen exhibits along with the promptcharters.com . The animals include:

Giant Pandas
Red Pandas
Asian Elephants
Several varieties of Large Cats
Several types of Monkeys and Apes
Sloths
Zebras
Maned Wolves
Grey Wolves
Bald Eagles
Lemurs
Naked Mole Rats
Leafcutter Ants
Longwing Butterflies
Black Widow Spiders
Chambered Nautilus
Sea Stars
Piranhas
Rainbow Boas
Komodo Dragon
Japanese Giant Salamander
Veiled Chameleons
Cuban Crocodiles
Double-crested Cormorants
King Vultures
Scarlet Ibis
Giant Anteaters
Many, many more!

The National Zoo is open every day of the year except for Christmas, and has free admission.

Amazonia

The Amazonia exhibit features a living tropical forest, home to free-ranging animals, and a large aquarium in which dozens of fish species swim.

American Trail

This wooded area features North American animals, including beavers, river otters, gray seals, California sea lions, brown pelicans, gray wolves, and bald eagles.

American Bison

The Smithsonian’s National Zoo started with bison on the National Mall—and now bison are returning to the Zoo!

Asia Trail

Wind along a beautiful bamboo-shaded trail and explore the habitat of seven Asian specis: sloth bears, fishing cats, red pandas, clouded leopards, Asian small-clawed otters, a Japanese giant salamander, and giant pandas.

Bird House

Birds of many species flock together at the Bird House! Meet birds as diverse as the flightless brown kiwi, the enormous kori bustard, the gorgeous Eclectus Parrot, and many more!

Cheetah Conservation Station

In this outdoor exhibit, cheetahs and Grevy’s zebras (separated by a fence) can be seen in a grassland setting similar to their savanna habitat. Gazelles and other African animals can also be seen here.

Elephant Trail

The Zoo’s state-of-the-art Elephant Trail exhibit is an innovative new home for our Asian elephants.

David M. Rubenstein Family Giant Panda Habitat

The Zoo’s giant pandas live in this state-of-the-art exhibit, designed to mimic the pandas’ natural habitat of rocky, lush terrain in China.

Gibbon Ridge

See siamangs and white-cheeked gibbons swing quickly around their exhibit.

Great Ape House

The Great Ape House is home to western lowland gorillas and orangutans.

Great Cats

A pride of African lions and a family of Sumatran tigers live at the Great Cats exhibit.

Kids’ Farm, sponsored by State Farm

Kids’ Farm is home to cows, donkeys, alpacas, hogs, fish, and goats. Kids can groom some animals and have fun on the Pizza Playground.

Lemur Island

Look for ring-tailed and red-fronted lemurs in pagodas and in the grass.

Reptile Discovery Center

Dozens of reptiles and amphibians—from a massive anaconda to diminutive newts—live in this exhibit.

Small Mammal House

Golden lion tamarins, naked mole-rats, porcupines, armadillos, sloths, and many other small mammals can be seen here.

Think Tank

This exhibit is a place to think about thinking. See and learn about orangutans, Sulawesi macaques, leaf-cutter ants, and more.

https://en.wikipedia.org/wiki/National_Zoological_Park_(United_States)