It's certainly not a zebra or a yeti. Find me a biology textbook that says an unborn human is not a human.
That "parasite" remains a parasite, completely unable to take care of itself until several years after birth. Why do you want to prosecute a mother for murder if she casually drops her 6-month-old baby in a trash compactor?
See, your arguments are completely arbitrary and not based in science or objective measures. An unborn human is just that, a human. Once you admit that, we can have a discussion about the value we as society place on that human. Obviously, you place no value on unborn human life at all and should not be entrusted with the care of a pregnant woman.