Well I did and anyway, its a lot easier to get shiny if you breed them with a foreign pokemon, cuts it in half and in black and white 2 you can get an item that makes them even easier, you don't have to believe me about my shinies though though I don't really lie and would have no reason to. Just lucky, I look for them a lot on the global trade systems, I even traded my Victini for one, luckily I had 2 Victini's due to 2 events on obtaining them.
Mine was an Swinub, don't remember the lvl but was in original pokemon gold I found several others since, whismur on ruby, roselia on ruby and a bidoof on ruby. Don't remember if there is anymore although I traded for a few on the global trade system, shellder and an graveler which evolved to golem.