FACTS:

Babies have flexible skulls to pass through the birth canal and allow their brains to grow. Their skulls are held together with sutures, or joints between the bones. As babies grow, the sutures help the skull grow evenly. The bones gradually fuse to form a solid skull. Adult skulls can often be distingushed between male and female. Male skulls are heavier, whereas female skulls are rounder with less protruding mandibles.