Animal Enrichment

What Is Enrichment?

Enrichment gives animals a creative outlet for physical activity and mental exercise, as well as choice and control over how they spend their time. Examples of enrichment include puzzle feeders that encourage animals to forage for food, climbing structures that enhance habitats, and training sessions where animals can interact with keepers.

Enrichment keeps an animal's day interesting and is just as essential to animal welfare as nutrition and veterinary care.

Types of Enrichment

Amazonia rainforest exhibit

Habitat

Changing the environment creates a novel experience for animals. Adding trees, vines, and perching areas or using different substrates, such as sand, mulch, or grass can entice animals to navigate their habitats in new ways. Keepers can also provide options for dens and different types of bedding.

Nigerian dwarf goat fiesta jumps over an agility hurdle.

Cognitive

Helping animals exercise their minds is as important as giving them space to run, jump and climb. Training sessions and research projects are two types of cognitive enrichment that allow animals to problem-solve, learn and try new activities. Past research has included studies on orangutan memory, how lizards see color, and how giant pandas forage. Training often lets animals participate in their own medical care, like learning to step onto a scale.

African lion Luke rubs his head against a tree with scent enrichment

Sensory

Scents and sounds encourage animals explore their habitats. Natural predator or prey scents and new smells, such as spices or diluted perfumes, can be sprinkled on the ground or sprayed on a log for an animal to investigate. Playing recorded sounds, like insect activity and bird calls, can simulate the sounds of a habitat in the wild.

Collared lemurs Beemer (left) and Bentley (right) play with a puzzle feeder toy.

Food

Food can be placed in a puzzle feeder, hidden, frozen in ice treats, buried, or scattered throughout an animal's habitat. Making food part of daily enrichment encourages zoo animals to forage and work for their meals, just as their wild counterparts do.

a tiger pulls on a rope connected to a large rubber ball

Toys

Toys can include burlap bags, sheets, boomer balls, kongs, chew toys, hammocks and more. Often, toys and food are combined to create new, enriching activities for animals.

Enrichment and Training Stories

Sloth hangs upside down
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Closeup of a scaly giant tortoise's head
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Happy 50th 'Zooniversary' to Chyna and Rulon, the Zoo’s Aldabra Giant Tortoises ›

There are plenty of objects and artifacts at the Smithsonian that are old. But at the National Zoo, there's not much older than Rulon and Chyna.

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8 Reasons Why Zoo Staff Think the Chacoan Peccary Might Be Your New Favorite Animal ›

Two animal care experts share why this new species might become your next obsession.

A close-up portrait of Asian elephant calf Linh Mai's face. (Roshan Patel/Smithsonian)
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Look Back At Linh Mai’s Most Memorable Moments As She Turns 7 Months Old ›

Seven months ago, the world fell in love with a little Asian elephant named Linh Mai. As she turns 7 months old, we're taking a look back at her most memorable moments.

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Meet the Retirees Turning Their Farms Into Wildlife Corridors ›

As habitat fragmentation threatens Virginia's wildlife, two retired neighbors are turning their farms into biodiversity havens backed by Smithsonian science.

Image of baby elephant Linh Mai in a yellow and orange flower shaped mask. The words Tickets on Sale Now and October 16, 17, and 18 appear on a black background alongside the words Boo at the Zoo.
August 20, 2026

Two Ticketed Halloween Celebrations at Smithsonian’s National Zoo and Conservation Biology Institute ›

Halloween traditions return to the Smithsonian’s National Zoo and Conservation Biology Institute this October with two wildly popular after-hours events: Boo at the Zoo, sponsored by Mars, Incorporated, and Night of the Living Zoo.

Gloved hands hold two fuzzy red panda cubs
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Three Adorable Red Panda Cubs Born This Summer at the Zoo’s Front Royal Campus ›

“The cubs are really just balls of fur that eat and sleep right now,” said Jessica Kordell, assistant curator of carnivores.

A big eyed newborn oryx calf cradled by a zookeeper
August 14, 2026

How Smithsonian Science Is Helping the Scimitar-Horned Oryx Recover — and Thrive ›

Once pushed to the brink of extinction, the oryx is becoming one of conservation's most inspirational stories.