To get sneasel to evolve withoput trade, give it the razor claw. now, change it to night time. level-up the sneasel once and it will evolve into weavile.
if it doesn't have the razor claw, or it's not nightime, it will not evolve.
don't rate this unless you tried it!!!!!!!!!!!!!!
p.s. somehow, weavile can learn surf. huh?