lol there is 2xp today for new years. Sometime igg is too lazy to tell everyone.
http://wl.igg.com/news/newscontent.php?aid=5495
best way to check if theres 2xp is by bursting and lvling your cow.
If your cow is lvl 1 and fights 2 beetles and lvls up to 4, then it is 2xp.