"People underestimate how smart cats are," commented one viewer of the video that has been seen over 20 million times.

"Our neighbor's cat started waiting for my daughter to get off the bus. Then we started feeding him and soon after it started knocking on our front door two or three times a day to let us know he ...

There's good news for the Ambler family of Londonderry, New Hampshire. The family is celebrating the return of their beloved family black cat, Kumiko, who has been missing since March. Kumiko has had ...