Talk:Neon Katt/@comment-37076256-20200105204507/@comment-4010415-20200106041033

They never said the Grimm immediately die upon being captured.

"Keeping them in captivity has proved to be an understandably difficult task, as the creatures tend to either die, or kill those who imprisoned them in the first place."

Difficult, but not impossible. And the fact that it's an "either or" situation where, if the Grimm doesn't die, it kills the person who imprisoned it, implies they last for at least some period of time. After all, the WoR doesn't say the person who attempted to imprison it, but rather the person who did imprison it.