These apes can tell when humans dont know something, study finds 
  
Some great apes realize when a human partner doesnt know something and are capable of communicating information to them to change their behavior, a new study shows. 
 
Researchers from Johns Hopkins University studying bonobos found that they would point to where treats were hidden if they could see their human partner didnt know where they were, according to a statement from the university, published Monday. 
 
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