Cardano founder Charles Hoskinson is sounding off on the Dogecoin (DOGE) mania, as the meme cryptocurrency skyrockets into the top seven crypto assets by market cap. This week Doge has been on a tear, increasing in price by 522% in just the past seven days and 118% in the past twenty-four hours. The asset has rallied 10,650% on the year from $0.004 in January to an all-time high of $0.43 and has entered the mainstream, garnering attention and support from Tesla CEO Elon Musk and billionaire entrepreneur Mark Cuban. Although Dogecoin entered the crypto world as a joke, Hoskinson warns that as the asset's price takes off into the stratosphere, a bubble is no doubt forming that will cause many individuals to lose an alarming amount of money very quickly.