The puzzle shows a lion, an elephant, a zebra and an antelope. They are looking in different directions. What does that tell us about their footprints?
If you take the animals in the correct order (from left to right) and turn the footprints the way the animals are facing then you are already very close to solving the puzzle.
If the footprints are facing the right way then you will get the term: YIN & YANG. Have you heard of it?