Table 1.

Marmoset behavioral ethogram

Behavior	Definition
Agitated locomotion	Rapidly moving between locations with an exaggerated gait; tail extended or arched
Inactive alert	Stationary behavior involving continuous head movements while scanning environment
Scentmark	Rubbing sternal (tummy) or anogenital area (more commonly) over surface/substrate
Piloerection	Puffing of the body hair
Calm locomotion	Movement between locations with relaxed gait
Inactive rest	Stationary behavior with relaxed facial expression and minimal scanning; tail can be curled under body, and eyes may be closed