HOW DOES A SKELETON GROW? A newborn baby has more than 300 bones, but many are made of a soft, rubbery material called cartilage instead of bone. Up until the late teens, as a child grows the cartilage lengthens and turns into bone, and some bones fuse together. By adulthood, there are just 206 bones in the skeleton.

Description: This is Sans' Sprite from Undertale