10 a.m. - 1 p.m.

Otters need our help! Of the 13 different species of otter, only one — the North American river otter — is not experiencing population decline. Attend an otter feeding or keeper talk, participate in interactive learning opportunities and find out how you can help otters at the Smithsonian's National Zoo’s World Otter Day celebration. Special demonstrations and activities will be held near the Asian small-clawed otter exhibit along Asia Trail.

10 a.m. - 1 p.m.

The oceans provide food, jobs, recreation and even the oxygen we breathe! They are also home to some amazing animals. Join the Smithsonian's National Zoo for World Oceans Day. Celebrate marine species along American Trail, explore the world of coral conservation in Amazonia and discover new ways to help protect ocean habitats worldwide. Activity tables will be set up between the seal and sea lion exhibits on American Trail, with demonstrations occurring at both American Trail and Amazonia.

10 a.m. - 1 p.m.

Snakes are fascinating animals that play an important role in their ecosystems. Head to Reptile Discovery Center on World Snake Day to learn more about these incredible animals from the zookeepers who care for them. Watch a snake feeding, learn about venom and discover how you can be a friend to snakes in the wild!

10 a.m. - 1 p.m.

From trunk to tail, celebrate all things elephant at the Smithsonian's National Zoo Aug. 12! The largest living land mammals, elephants are intelligent, social and complex creatures that researchers are learning more about every day. Prepare for a day of elephant-sized fun and exploration, where you can hear from elephant researchers, play elephant-themed games and attend special training demonstrations.

10 a.m. - 1 p.m.

Did you know that sloths are their own moving ecosystem? Algae can grow on sloth fur, as these leaf-eating mammals slowly make their way through rainforest canopies. Find out more about life in the slow lane at the Smithsonian's National Zoo’s Sloth Day celebration, where you can see a sloth up close, explore sloth-related objects and discover how you can take action to save sloths in the wild.

10 a.m. - 1 p.m.

Raise awareness for orangutan conservation during the Smithsonian's National Zoo’s Orangutan Caring Week celebration Nov. 14. The Zoo’s orangutans will receive special enrichment, while visitors enjoy games, activities and opportunities to speak with great ape keepers and experts. Festivities will take place in the Great Ape House, with some demonstrations and orangutan viewing opportunities also occurring at Think Tank.

10 a.m. - 1 p.m.

Learn about the fastest animal on four paws at the Smithsonian's National Zoo’s International Cheetah Day celebration! Join cheetah keepers and researchers to find out what it takes to care for cheetahs at the Zoo, and discover the amazing adaptations that allow these cats to achieve such incredible speeds. Keeper talks, special enrichment and hands-on learning opportunities will take place at Cheetah Conservation Station.

10 a.m. - 1 p.m.

Hop on over to Reptile Discovery Center to kick off spring with the Smithsonian's National Zoo’s World Frog Day celebration! Discover different frog species found around the world, find out why frogs are such a uniquely important part of understanding healthy ecosystems and learn how you can become a frog citizen scientist!  Meet frogs and their keepers, as you enjoy frog-themed activities hosted throughout Reptile Discovery Center.

10 a.m. - 1 p.m.

Become “bear aware” celebrating the eight species of bear found around the world — three of which live at the Smithsonian's National Zoo! Enjoy special demonstrations at the Andean bear, sloth bear and giant panda exhibits, as well as bear-themed activities for kids and opportunities to learn how to be safe around bears while out in nature.

Teddy Bear Clinic

Kids, bring your teddy bears to the Zoo for a "check-up" as part of the Bear Day festivities! Zoo veterinarians will be at the Bear Day activity area (near the sloth bear exhibit) and will give each teddy bear a special exam to make sure every stuffed friend is in tip-top shape.