I've experienced more than a few moments where I wanted to ask my cats why they are that way. Pippi's insistence that anything on the other side of a door HAS to be worth getting to comes readily to my mind.

Pippi knows not what to do with either dried anchovy or beef jerky... then acts offended when Jolie eagerly demonstrates. Pippi has all her brain power reserved for getting to people food under various measures to stop her. That, and attempting to get to forbidden rooms...

I have witnessed a picture of the kind of cat that has nothing behind the eyes and... yeah. You can hear the static in their head.