We share 99.6% of our DNA with chimpanzees.
They are so very close to us genetically
that their blood has been used successfully
with human blood transfusions safely,
which brought on this disturbing thought to me.
We are both also close enough of a specie
to reproduce and procreate a hybrid Humanzee,
and you just know that there's a mad scientist out there somewhere
who will attempt it inevitably.