jaguargod,
Yautja,
13 years ago
I'm pretty sure that they don't attack their own species. They have a hive mentality, focused solely on species survival and proliferation. In Alien 3, the dog alien refused to attack Ripley because of the chestburster she had inside of her. Not to metion the fact that if the facehugger did try to insert it's umbillicus down the alien's throat, the inner jaws would just shred it.