I have a little spider in my bedroom. He wanders between two spots - one is 3/4 of the way down a wall at the ceiling and he wanders into the corner on the other wall , stays there a few days then wanders back to the exact same place on the opposite wall.
How does he know where to stop? He's not very big and I'm leaving him be - but the fact he keeps going to the exact same spots has me fascinated.