Habituation
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
Habituation is a simple form of learning in which an animal's response to a repeated, harmless stimulus weakens over time.
Show
A prairie dog stops giving alarm calls at a scarecrow after repeated exposure shows it poses no threat.
Watch for
Habituation is a decreased response to one specific stimulus, not general fatigue affecting all responses.