Also, one of the most stubborn animals in the animal kingdom. If they want something, they’ll do it, again and again, no matter what you tell them or do to them.
If they want a specific door or window to be left open, they’ll sit there until you open it. Then they’ll stay there to make sure it stays open. If you close it, they’ll complain.
They want to get on top of something? They’ll climb on it. No matter if you shoo them away, yell to scare them away, or get them off. They’ll do their best effort to get on top of that place.
The only thing that can move them from those fixations is by awakening their hunting instinct. Get the laser pointer, and they’ll forget (at least for a while).