I've studied various aspects of play behavior in a wide variety of nonhuman animals (animals) for decades, focusing mostly on members of the "dog family" (canids), while some of my students have ...

Anyone who has ever chucked a tennis ball in the general vicinity of a border collie knows that some animals take play very seriously—the intense stare, the tremble of anticipation, the apparent joy ...

Add Popular Science (opens in a new tab) More information Adding us as a Preferred Source in Google by using this link indicates that you would like to see more of our content in Google News results.