The latest trend among one chimpanzee group was what researchers are calling "grass-in-the-ear" behavior, writes Nature World News.
Chimpanzees have a demonstrated tendency to learn from one another, and in this case they illustrate a perfect example of the old adage "monkey see, monkey do," writes Nature World News.
18:48 Animal rights activists claim major win in Ringling Bros. closing21
15:28 Animal activists finally have something to applaud at Ringling Bros. circus: its closure18
14:04 Nowhere left to run away to: The final days of the circus15
05:02 Ringling Bros. and Barnum & Bailey Circus to close after 146 years13