The kittens were tiny when they figured out how jump up on the outside ledge, to remove one glass slat and then the screen to break into my bathroom window. I have somehow lost the video, but here are some stills I took. Enterprising. The four of them worked together to get the job done. (Click on first photo to enlarge all.)
Play along by posting a link to your favorite Cat in the Window photo below in comments. Here is another one from me, plus links to others who have posted to this prompt today:
Challenge is for the entire month of April.