As you know, Dogecoin and Litecoin just a clone of Bitcoin, there is nothing new, the blockchain tech is developing all the time, so let's predict when these two sh*t coins die?
both coins are pegged to bitcoin... then as far as bitcoin continues his rise and rise those couple of shits will remain alive and strong.. cause all the people take some btc to invest in alts to not put all the eggs in... you know
if they die is cause bitcoin died too or because many time has past.
Dogecoin is not pegged to bitcoin, you can look at the charts.
Dogecoin is independent.