I don't understand why the sight of you should scare me so, Joseph said. He did not sound frightened. You don't look that threatening. Just... very different.
Different is threatening to most species, Nikanj answered. Different is dangerous. It might kill you. That was true to your animal ancestors and your nearest animal relatives. And it's true for you.
Part III Nursery chapter 12 (p. 186) - Dawn (1987)