What's with my cat?

He's five years old and just started chewing on everything in my room recently.  Right now he's mauling my sock like it's a fresh piece of meat.  Is he teething or something?

>>40
1.Let's see you prove how long you've been here
Nice try, I'm starting to get pissed. It's not about me, it's about you.
2.Citation Needed
Common sense. Ask people around.
3.You really need proof that I hate japan?!
That the hate has a ling history, yes.
4.It is wrong, so it's not being stubborn
（　≖‿≖）
Saying the same thing again and again without giving any concrete evidence, another mark of the anus.
5.Or to identify yourself at all times
Why? To whore attention? You are not a valuable addition to this board, not under the name.