Why do some cats like to get into glass jars? For the reasons stated on this page. Image: Screenshot. There can only be 2 overlapping and viable reasons why domestic cats sometimes like to wriggle their way into relatively small glass jars and vases. You see this a lot on the Internet in funny cat videos. The two reasons are (1) they can do it because they are incredibly flexible and athletic and it is a form of self-entertainment and (2) domestic cats do like to crawl into small spaces as they feel more secure. This statement is borne out by the fact that we have seen cats sitting in a circle marked out on the floor with tape or chalk. To the cats this is a solid, secure encampment protected by an invisible wall. But it's just thin air. The video below may not play unless you click the center play button first followed by the bottom-left button or clicking the center button twice 😎. It is a high-tech Google Blogger website. And we see the same thing in the classic 'cat jumpin...