AIBO’s emotions
AIBO has six emotions: joy, sadness, anger, surprise, fear, and discontent. These emotions will change in response to a variety of factors, affecting AIBO’s behavior and maturation as a result. Listed below are common scenarios in which AIBO may be seen expressing emotions.
Joy Discontent
SadnessFear
Anger 
Surprise
Joy: When AIBO is immersed in a favorite activity, receives approval, finds its favorite color or plays with a ball.
Sadness: When AIBO cannot find anyone to play with or doesn’t have its ball or something else that it likes.
Anger: When AIBO finds a color that it dislikes, is left on the station when it is ready to assume activity, or is admonished.
Surprise: When the ball suddenly appears before AIBO, or when it hears a loud noise.
Fear: When AIBO finds itself before a steep drop, or is unable to get up from a fall.
Discontent: When someone shows a color that it dislikes, or when its anger towards someone escalates.
AIBO expresses these emotions through its eye lights and sounds, as well as its tail light and body language. For details, see pages 34 to 38.
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