Board Thread:General Discussion/@comment-25266931-20170112165458/@comment-4010415-20170123022627

KNN005 wrote: So what, the Grimm smell your fear but not your actual scent? I'm calling into the question the senses of the Grimm. Do they track people by their sense of hearing and smelling or only by negative emotions? Because it seems like a glaring design flaw. Before humans were even made, Grimm existed. And there was no negative emotions before humanity because there was just plants and water and rocks. So when did the Grimm decide the only thing worth tracking is emotions? Plants, water, rocks, and animals.

We don't know how they sense negative emotions (whether they smell it or what), but we've known they can sense and are drawn to negative emotions since volume 2.

The Nevermore did not look underneath the house, so we can't say for sure that it couldn't see Ren and Nora. It got close to looking under the house, but it didn't. It probably couldn't sense their fear anymore, so it was looking around like "Wha, where'd the source of fear go?", then gave up and went after another terrified villager.