I am very sorry he took your stuffed fox from you. I don't think you are too old for toys. No one is too old for toys. Heck, even adults have toys like baseballs and like motor bikes. It's the same idea, but for adults instead of littles. Maybe if you tell him that way then he will understand.
I wish I had a stuffed fox to give you, because I would.

I think it's great that you have one on paper!!

bj