Final answer:
The snake's jaw is unique in the animal kingdom, allowing it to spread clamping pressure over a wider area compared to other animals.
Step-by-step explanation:
The snake's jaw is unique in the animal kingdom. Snakes have a very flexible lower jaw, the two halves of which are not rigidly attached. They also have many other joints in their skull, allowing them to open their mouths wide enough to swallow their prey whole. The structure of a snake's jaw allows it to spread clamping pressure over a wider area compared to other animals.