no
Buy the TM Dig or catch any Pokemon that already knows it. A common one is Diglett.
no but a boy gives dig to you sorry
yes in Pokemon sapphire you can catch a Pokemon that knows dig mainly trapinch and sandshrew
none. you have to teach it to them.
You can use Numel for just about anything (including dig)
Diglett or Dugtrio
select a Pokemon who knows dig.
AVOID THE WALLS!!!!!! IF YOU TOUCH THE WALLS, THE WORST GLITCH IN THE GAME OCCURS!!!!!!!!!!!!!!!!!!!!!!!! IF YOU TOUCH THE WALLS, THIS WILL HAPPEN: nothing. why would you even ask that question? if you touch the walls, you touch the walls. that's it.
Dig is a TM, and you can teach it to most ground types.
Some Pokemon that know, or can learn Dig: Sandshrew, Sandslash, and the Mightyena that I have knows Dig also.
you can't
you can't