Rumble Stomp

Wiggle, heave, POP! I broke free from the sneaker fort! Then the floor started to hum. A giant black box in the corner was buzzing with a deep, throbbing rhythm! BZZ-THUMP! BZZ-THUMP! I galloped straight toward it, claws clattering like tiny drumsticks. When I pressed both front paws right against the mesh front, the vibrations rattled my whole snout! ROAR! I stomped my heavy feet in time with the thumping pulse, shaking my tail so hard my wings rattled against the fabric grille!