That was f**king STELLAR!
This one felt way very unique. Loved the setting, the set, the editing, the pop song, the twist, everything.
This one was truly something special.
So the dog was an android of sorts...?
The skin on it's head came off because it bit or scratched the facehugger...?
The dog attacked the facehugger and got wounded by the acidic blood. The facehugger may have also clawed the dog's face in self-defense.