If you have a cat and study its behavior, you may come to the unsettling conclusion that your cat could be a psychopath. While your cat may not attack you with a chainsaw while wearing a hockey mask, it can still act like it doesn’t care, especially when it captures and torments its prey like mice or birds.

That’s why scientists at Liverpool John Moores University and the University of Liverpool in the United Kingdom, have teamed up to develop a detailed questionnaire you can use to see if your pet has psychopathic traits. So the next time you feel a pair of eyes staring at you in the middle of the night, your cat could be watching you to plot its next move against your life.

To learn more about learning if your cat is a psychopath, click here.