Mauzhertz

Mauzhertz is a mouse like Wesen, harmless, and never written about, since they don't pose a threat to any Grimm or Wesen.

Notables

 * Martin Burgess
 * Sauly

Of Mouse and Man
When interviewing Martin Burgess, Nick sess his in his Mauzhertz from briefly. When Martin Burgess faces Mason Snyder, and as Martin collapses in fear, and morphs, as Snyder morphs too. Martin then stands back u, unkorphs, and grabs a trophy, and kills Snyder. As Martin is chased by Nick, Nick catches him before Martin can kill him, and Martin explains why he is killing these people, and morphs while talking.Nick then arrests him.

Last Grimm Standing
Sauly is on the phone, and Monroe gets his attention by morphing, and Sauly morphs in his Mauzhertz form very briefly and unmorphs, and sells Monroe a "ticket" to a Lowen Game. Instead, Monroe actually got to participate in the fight, but was saved by Nick.

Cat and Mouse
A collector owns a shop, and when Edgar Waltz pulls out his gun to sell, the collector morphs into his Mauzhertz form, and Edgar promises to not hurt him or his family. Then, later, after he makes a fake passport (for Ian) for Rosalee, and Edgar walks in to remind he won't hurt him or his family. However, he didn't stick to his promises, as Nick and Hank find the Mauzhertz's desd body in the shop.