For example, when cats feel scared, their ears become completely flat on their head, creating a defensive ... flattening backward or swiveling to the side, signaling readiness to confront a ...

Just such a project is [Radomir Dopieralski’s] set of wearable mechatronic cat ... ears. [Radomir’s] version does not share their sophistication, instead he’s using an accelerometer to ...

Image via Shutterstock / OlgaOvcharenko There's a difference there: the "American" version is still fluffy and has some tufts above the ears, but they look a little more like a "regular" cat.