Board Thread:General Discussion/@comment-4010415-20141223120240/@comment-24994749-20141228014540

When they talked about faunus and night vision they said some faunus had it.

Even if monkeys don't have above human night vision, Blake shouted to Sun to go to the window. In a lightless room, even at night, the window would have been the only place from where light would have been getting in, so anyone, even someone without night vision would have been able to locate it.