Three 10 x 1.25 bolts hold the shoe to the rail.
This new puppy is an ANIMAL. The dog grabs her water bowl, full of water, in her jaws and flings it up in the air. So, the water bowl is bolted to a chunk of 2x12 plank. She flips the bowl, water, and plank up in the air. Finally, a piece of mainline railroad track is deployed to use gravity to attach the bowl the floor. This works.