Human Ethology Picture Collection

Origins of Facial Expressions: Chimp smiling and laughing

Origins of nonverbal communication: Greeting chimps. The female arrives and presents to the male, who touches her genital area. She turns, and he touches her face. She bows, and the male begins grooming.

Note the play face!

Contact behavior by primates

Social grooming by primates

Two-month, 20 day infant, blind from birth smiling. Note also the eye fixation, suggesting a central mechanism.

Deaf, blind girl laughing

Transition of a deaf-blind girl from smiling to crying.

Deaf-blind boy laughing (7 yr)

People Smiling

Woman interacting with her child

Expression of rage in a four-year-old girl

Crying during great depression

A 10-year old flirting Samburu girl turning her eyes toward the observer while simultaineously showing an intention to turn away

Flirting behavior

   Eyebrowl flashes across cultures