The forum is P/G-rated, but the game itself is PG-13. Or that's what I've come to understand about this whole issue.
On the subject of Filtering... I hate that idea with a passion. Like I said before, start catering to one group of people who want something censored, and you open the floodgates to more ridiculous things. <.<' But if there is one added in the future, then the option to turn it off would be appreciated.
Also, the whole lion/wolf war is hilarious! Even though it gets out of control sometimes, I don't mind it. If I'm bored and none of my friends are on, I go looking for a den that's inhabited just to play along in their little game. Because even though they aren't permanently claiming that part of the map, they ARE rping there - and by wandering near their den, you've kind walked into their rp.