As a child development social worker, much of what i saw here were babies that are advanced in motor skills. Babies are supposed to roll over by 2-3 months. My daughter was very early; crawled at 5 months and walked at 8. Many babies hold their heads up quite well at just a few days or weeks. One person holding their baby to walk showed an automatic reflex of putting the feet on the floor and they spontaneously move their feet like walking. I can't explain all the things like the black eyes and piercing looks, but I also saw some normal kids all with early motor skills who looked fairly normal. And it's not infrequent for children to have a tooth at an early age or even born with one. Be careful what conclusions you draw.