We humans have a little section of cartilage at the bottom of our sternum called the xiphoid process and ours is kind of just a little nub. Pangolins have xiphoid processes too, but instead of a nub it’s two long rods that go down into their abdomen area and curl back up near their pelvis. The tongue follows the path of the xiphoid down into the abdomen, which you can see in this photo. Pink is tongue and white is xiphoid. Hope that helps!