The Dogecoin price has surged above $0.4, reaching levels not seen since the 2021 bull market.A golden cross, a bullish indicator, has appeared on Dogecoin's weekly chart.Based on Fibonacci extension levels, analysts predict a possible rally towards $2 to $4 for Dogecoin.Dogecoin's current price is $0.4278, and it is about 70% away from its all-time high.