Ablack hole is a star that has

begun to collapse in on itself
too little gravity to emit light
gotten to the middle of its life
become too bright to see

A black hole is not a start that has BEGUN to collapse, it is a start atleast bigger than a red giant that HAS collapsed after going super nova, the gravity around a black hole is far more than most stars making is so light waves can not escape the gravity.

Ifound this on google “according to the findings, a foramen magnum positioned toward the base of the skull is found not only in humans, but in other habitually bipedal mammals as well.” i hope this you for what your looking for