A Room With A View...of a Man and a Cat

My apartment building is teeming with animal enthusiasts. I am one of the few residents without a feline companion and/or some sort of kitty bumper sticker on my car. At first glance I thought one of my wacky neighbors was trying to get the attention of his aloof pet. When I returned from getting my mail I noticed the man crawling around and pretending to pounce. He is currently hiding behind the palm tree at the foot of the stairs. I'm not sure whether I should ignore him, call the police or shake a can of pennies at him. Hmm, He's on all fours again, crawling around in the beauty bark. Perhaps it's best I close the blinds.