Put any loose item on a shelf or table and a cat will likely knock it off. Why cats do that might seem a mystery until you realize cats just like destroying and wrecking a house as much as possible, so that’s why cats knock items to the floor.

For a more scientific explanation, Mike Delgado from the School of Veterinary Medicine at UC Davis said cats knock things over “because they have learned it is a quick and easy way to get their human’s attention.” So it’s basically their way of passive aggressively getting revenge for ignoring them, which sounds correct to anyone who has ever owned a cat.

To read more about why cats knock things over, click here.