I have a cat that likes to play with paper balls. For some reason, he's obsessed with chasing them around the room (especially when I throw it). One day I was balling up a piece of paper and didn't feel like getting up to throw it away. The cat was in my room and on my bed. He was looking at me as if he wanted me to throw it, but instead I put the paper ball away in a drawer in my room since it was late at night and I didn't feel like playing with the cat ( I was tired). Well I forgot about the paper ball for about a week. I had to go in the same drawer to get something and left it slightly open. I left the room for about 5 minutes and when I came back he was in my room trying to get the paper ball out of the drawer. I couldn't believe he actually remembered I had put it in that drawer.