Those things were put into the soft skull of a newborn pup, and even within a few months the skull would have been hardened to a point where they could not be removed.

The creatures were dead and the brains had begun to decompose by the time they were removed from the soft spongy skulls that felt to the doctors more like palatal cartilage than the hard bone of a human cranium.

My confidence grew as I imagined cracking a few of the Morlocks' soft skulls with this piece of primitive engineering.

Musing upon the fact that his wife's moods were as predictable as night and day, Wantanabe gathered Tomo briefly in his arms, bestowed a kiss on his soft, downy skull then handed him back carefully.

The infant was unformed, a somewhat larger lump of tissue, with cartilage for bones and his soft skull imperfectly sutured as yet.

Craniotabes (soft skull)

I will fasten this patented machine upon the child's soft still-unformed skull and gently, gently, as the child grows, the bump of Ideality, the bump of Constructiveness will grow, responding obediently to these gentle but firm pressures.

Ryan thought for a moment about putting a bullet through the top of its soft skull, but there were more important things to take care of.

She gasped, but her left arm instinctively folded securely underneath the baby's torso, while her right hand cradled his delicate soft skull.

They achieved this by wrapping tight cloth straps around the heads of newborns in order to alter the shape of their soft skulls into a more conical form; this cranial deformation was made to distinguish social classes of the communities, with only the nobility having cranial deformation.