
Adopt a Gorilla or Golden Lion Tamarin.
Human Origins Program at the Smithsonian's Museum of Natural History.
Training at the National Zoo is done to monitor animal health, provide
essential medical procedures and preventative care without
the use of restraint or anesthesia.
Frequently, you will see a keeper interacting with one of the animals through the mesh. Zoo visitors get the opportunity to observe daily animal management and care.

Training also provides for the animals by:
The Smithsonian National Zoo trains its animals using positive reinforcement. Positive reinforcement involves the following:
Training often consists of mock medical procedures such as presenting a body part for examination or opening the mouth for inspection and cleaning.
Training begins by requesting a behavior such as presenting
a hand for examination. When the correct behavior is performed
a whistle is sounded, creating a bridge for the animal. Pairing
the bridge with the food reward and timed with the correct behavioral response reinforces, or shapes, the behavior. Eventually
the keeper should be able to simply say “hand”
and the correct behavior is performed.
The following is a partial list of primate training:
Gorillas
Orangutans
Gibbons
Lemurs
In the wild, animals spend a lot of time foraging or resting, and these behaviors occur in zoo settings as well.
The body language of animals is not the same as that of humans. Apes’ facial expressions and postures are sometimes considered sad or bored by people who do not understand the context of the behavior from the animal's perspective.
A careful study of behavior (breeding, aggression, eating)
and physical measures (weight, hormones, hair condition) by
knowledgeable observers is the way to truly determine an animal’s
health and mental condition.