You have to get a mudkip and breed it
You have to choose Mudkip as a starter and then breed it with Ditto.
you cant get mudkip without trading on platinum
by migrating from fire red
Leveling up
you cant just catch it in platinum you have to migrate it from emrald,saphire or ruby
Put it in the daycare with a ditto
get it to the daycare with a ditto. they get busy and make a mudkip egg
you need one eevee and one ditto, then breed them and you will get eevee eggs.
no legendaires cant have eggs exept for event eggs because they have no gender.
you mate mudkips, marshtomps, or swomperts. Or I think you can also trade.
call at 1-619-992 and ask for Julian
Just keep running around and soon it will hatch