Flying Sharp-Toothed Vermin

For faithful readers of the blog (of which there are many, and I deeply thank you for your continued interest), I don't think the following picture (from today's edition of the NYTimes) requires any further explanation. Let me just say that while this particular image is an "imagining" of a mammal recently thought to have inhabited the earth many years ago, there is no question in my mind that these (chewing) creatures are responsible for the new holes in my ceiling: