Cougar eyes him warily, because he's seeing some similarities to Jake already, even if he's not about to say that out loud. Still, that want to keep it is a strange thing. "What if it keeps freezing everything, from the jar outside?"

It's a lot of words for him, and they sound rough, but Cougar needs him to answer so that he's thought it through, because if not, then there's going to be a lot of trouble when ice keeps creeping out.

He needs to know 'how can you be so sure it's inert'?