A Row of Dominos part 22

I noticed an open tin of wooden dominoes sitting tipped on its side beneath the craft table. Stepping over, I carefully picked up a few rectangular tiles and lined them up upright on the polished wood floor, spaced exactly one finger-width apart. Setting each piece on its narrow edge took careful balance, and I paused each time to ensure the alignment was straight. When a neat row of six stood ready, I gave the first black tile a light tap with the tip of my paw. Clack-clack-clack! They tumbled in a swift, delightful cascade, each piece smoothly knocking the next until the whole sequence lay flat.