With this food puzzle, your dog will have to use their nose or paws to move the top layer and find the treat you've hidden, or find a way to remove each lid to uncover it. 

The fewer food/treat pieces you have your dog work for at a time, the better. That way their success is based on their skill set, rather than a high probability of multiple pieces being everywhere.

Pro tip: Once your dog has figured out this puzzle, wrap it in a towel, put it inside a cardboard box and bury it in your dog's toys so they have to jump in and dig, just to get to their puzzle!