Some Chimps Are Putting Grass in Their Ears—For No Particular Reason | Smart News | Smithsonian

It all started with a Zambian chimpanzee named Julie in 2010. Julie stuck a piece of grass into her ear, and left it there. And she would do it over and over again. But why? To save it for later, for some unknown purpose? For fun? To show that she understood she would become dust and one day fertilize the grass, in an ironic nod to The Lion King?...
http://www.smithsonianmag.com/smart-news/animal-fashion-some-chimps-are-putting-grass-ears-and-nobody-knows-why-180951888/?no-ist