I would agree with @littleboy here, dogecoin is not the best investment, nevertheless, it could be a great trade tool
when BTC moves, one of the late movers is dodgecoin, when you see it start to moon, it's probably a good time to sell some other crypto
think of having a little dodgecoin as a canary in the coalmine, it's not the most reliable indicator, but something with no dev, and not function that can actually still move shows you how it's still in early stages of crypto technology
general advice don't invest in it, at most lunch money to be safe, it's safer to invest in widely held and widely used (strong existing use case) crypto like BTC, LTC, ETH, and Steem.