this looks much like a joke. Marketcap website had a glitch (or intentional), which accidentally put the market cap of the DOG multiple times of that of BTC, this pumps a panic mining of the coin, which is a huge ad for the coin.
Now the coin is trading at cryptsy, and because of this made popularity. But nothing new there in this coin, it's just a clone of a clone of Infinitecoin. It has a total of 100 billion, 10 billion more than IFC. The later launcher of the clone of IFC gained to about 50% of the value of the IFC. According to this, the DOG is over-valued by 60 times now, the "fair" market value is about 0.00000003 BTC/DOG. It will be very interesting to see how the DOG price go in the next few weeks.