after you saved the old man in nimbasa city, he gives you the bicycle.
go back to route 3 to the day-care. put 2 pokemon in the day-care.
be lucky that those 2 pokemon like eachother and produce an egg.
Legendary Pokemon cannot be breed.
an pokemon egg
You canot a dialga egg in pokemon black and white.
yes if you breed one with a ditto they can make eggs
you would have to trade it from another Pokemon black/white, or you would need ditto to make an egg
just put a male pokemon and a female pokemon that are in the same egg group in the pokemon day care west of striaton city. it will take some time for them to make an egg but the day care man will call out to you once the pokemon have made an egg
Scraggy
You can't, It is only obtainable in Pokemon Black or White. But if you want one in Black or White, a Pokemon ranger will give you an egg of a Larvesta in Route 18 so remember to make room for it!
No.
You walk, run or Bike with the egg on your team.
Well on Pokemon black and white there is a mystery egg event.
No one knows. Because no one saw it