The type of behavior exhibited when an animal recognizes itself in a mirror comes within the domain of “theory of mind,” thus is best studied as part of the field of animal cognition.
                    
                
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                Aof “theory of mind,” thus is best
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                B“theory of mind,” and so is best to be
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                Cof a “theory of mind,” thus it is best
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                Dof “theory of mind” and thus is best
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                Eof the “theory of mind,” and so it is best to be
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