Conquering the Yellow Boulder

I stomped off the rug onto the hard, slick wood! Right ahead sat a giant, fuzzy yellow sphere resting against the wall. A rolling boulder! I braced my legs, let out a sharp *rawr!*, and slammed my shoulder right into it. It rolled! The beast glided down the hallway with a soft hum. I scrambled after it as fast as my feet could pump! *Thump*—it bounced off the door frame and rolled straight back into my chest. I tumbled onto my tail, but I clamped both feet down hard onto the fuzz to pin it. Victory!