A Split Leap Over Dominoes

I marched toward a fallen row of black wooden dominoes lined up near the rug! One head wanted to hurdle right across the tall, upright tile at the end, but my other head tried to pivot backward in sudden caution! We locked up mid-stride, teetering violently on one foot. Wobble, slip—clatter! My swinging knee tapped the lead block. *Click-clack-clack-whirrr!* The entire black zigzag crashed forward like tumbling soldiers, clicking into each other in a frantic wave right beneath my claws. One jaw gaped wide in startled panic while the other hissed in pure delight at the sudden noisy cascade!