I suppose this doesn't fit on Wikipedia, but obviously one possible cause is that Cats are aliens from a planet abut 3.4 million lightyears away, and during tha

I suppose this doesn't fit on Wikipedia, but obviously one possible cause is that Cats are aliens from a planet abut 3.4 million lightyears away, and during that 7 million year period, all the cats left Earth suddenly because their planet needed them [1]. They used a near-light-speed vehicle to get there, solved the crisis on their home planet, then returned to continue their stewardship of Earth, and then the vehicle flew back. Publishers, line up [1]: https://www.youtube.com/watch?v=J5k8ZQsZJpk https://www.youtube.com/watch?v=J5k8ZQsZJpk