I just got in from a friend's house and of course she bought Seamus a gift (I bought her dogs gifts too) and one was a mouse you fill with catnip... he is in his glory right now... I've never seen him so attached to a toy... he's carrying it around in his mouth and won't let me near him to play... I have never seen him react so crazily to catnip before! It's great... I can't wait til tomorrow when I give him my gifts, which I will be wrapping with catnip in the paper, to tear open!