Those Japanese robotics engineers have done it again: Making something you thought no one would ever need.

They have developed a cat's tail that people wear, with its belt strapped to the waist.

The tail has sensors that reflect how you are feeling. Just like the tail of a cat, it twitches and whips depending on how excited, happy or mad you might be at the moment.

When you are calm, the tail is still.

And you thought the Manti T'eo story was strange?