you cant. even if you had another dialga or a ditto, you cant.
this guy is soooooo wrong. if u haves 2 dialgas u can breed them.
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No, Dialga is unable to breed.
NO dialgia can not breed because it is a legendary Pokemon
Pokémon legendries do not have the ability to breed. Palkia and Dialga will not lay eggs because they are both legendary.
no it is legendary. but in Pokemon heart gold or soul silver you get a giratina or palkia or dialga egg by going with arceus to the alph ruins
free dialga free dialga free dialga ????????????????????????????what do you mean free dialga???????????????????????