When cakes are cooled to room temperature, crumble into a large bowl. Toss with half the remaining cookie crumbs and the chilled pudding. Use plastic wrap to line a brand new, clean cat box. Put mixture into cat box. Put three unwrapped Tootsie Rolls in a microwave-safe dish and heat until soft and pliable.
Shape ends so they are no longer blunt, curving slightly.
Repeat with three more Tootsie Rolls and bury in mixture. Sprinkle the other half of the cookie crumbs over top. Heat remaining Toostie Rolls, three at a time, in microwave until almost melted. Plop them on top of cake and sprinkle with cookie crumbs. Serve with a new, clean pooper scooper.