Shamu Goes on Strike
In this video, taken two months ago at SeaWorld San Antonio, Shamu, the generic name for orcas at SeaWorld shows, decides not to perform one evening at "Shamu's Rockin' Creep Show".
When the orca decides to beach herself at the side of the pool and not cooperate any longer, you hear the audience complaining and one of the creeps in the "Creep Show" audience shouting at her to "Get back in the water!"
Then one of the supervisors explains to the audience that they're canceling the show for the evening and that "these animals ... think on their own and make decisions on their own."
I guess that would not include the decision not to be held captive at SeaWorld any longer.