Your dog will have to learn to manipulate the different layers in alternating directions with his paw or nose in order to get the dog treats. (topdogtips.com)
If you're making these for a larger holiday party, you could lay them in alternating directions on a serving platter, like the photo below. (urbanblisslife.com)
Continue going in one direction or stop and alternate direction after each repetition. (womenshealthandfitness.com.au)