Board Thread:Speculation House/@comment-4047010-20160206215454/@comment-4010415-20160207174740

Phantomlink959 wrote: Grimm don't have blood. Even if they did, it would dissolve into weird smoke stuff as soon as it was removed from their body. ^^^ Exactly.

Grimm do not have a stable physical form. People can't even make taxidermies of Grimm or take a Grimm's tusks.