This is my cat.She startles easy. Either that or she has an overactive imagination. She is prone to reacting swiftly to any disturbance in the force. Like, in this photo below. Paul cleared his throat in the other room...and BAM!...she becomes a blur. Most of the time her reaction includes a pretty dramatic skedaddle.
Unfortunately for us, oftentimes her imagination is most active when she is sitting in or next to a window. A few of those windows happen to have glass items nearby. Here are a few things my cat has broken recently.
Lesson for Fanny: Nobody is after you. Stop jumping out of windows like your life depends on it.