I don't think Doge has any development now, so it's probably not because of some news... probably just classical pump & dump is being played by some PnD group. I personally wouldn't invest in Doge right now.
Well if the coin was dump i don't think we need to wonder about it. Because that's normal in any coin, its not only happen in bitcoin it is also happen in other coin, and i think it is also depends on the developer if what happen to the coin.