Just such a project is [Radomir Dopieralski’s] set of wearable mechatronic cat ears. A cosplay accessory that moves as you do. Very kawaii, but fun. You may have seen the commercially available ...

But NPR's Nell Greenfieldboyce found that this old term seems to hold a bit of truth ... of an animal's ears. STEVEN HACKLEY: So you can tell which direction a cat or a dog is paying attention ...