Hissing ferret!

Question
I just recently got my first ferret about a week ago. He's three months old and up until recently (today), he has either been A) with me or B) running around in my (ferret-proof)room with me in it. We finally purchased a cage today in order to potty train him and I left him in it for about an hour while I went to class. When I got back, he was at the cage bars with his mouth partly open, and when I let him out into the room he was aggressively biting his toys to the point of ripping them (which he's never done before). When I went to take them away from him he hissed (but did not bite). I "scruffed" him and said "NO" and talked to him a bit to see if he would calm down, and ended up taking away his toys. He looked around the room a bit then promptly went to sleep. I am confused at his unusual behavior and don't want this to happen next time I leave him in his cage alone. Whats up?

Answer
Hissing is normal and the behavior you saw probably came from his first time being "cooped"up in the new cage.  Just expect a little craziness when you let him out.  It is also OK if he rips his toys as long as they are ferret safe and he doesn't injest the pieces.