I never said thats what justified being able to kill a fetus in the womb, on top of that when asked "you rlly think this is a human" you can 1 not answer, 2 realize it can be other things, or 3 answer saying you don't know. what you shouldn't do is agree without knowledge.
If you're having a debate about human abortion and someone posts a picture of a fetus, it's not unreasonable to assume it's a human fetus. Most mammal fetuses look similar. So what? That doesn't say anything about the ethics of killing a human fetus in the womb.