Grimm vs. Disney Versions:

Interestingly, the tone of the Grimm Brothers' original did not exactly make it into the Disney version of this tale. In one translation of the Grimm version, the wicked Queen gets a woodsman to put Snow White to death. Having pity, he returns with the heart of a wild animal instead, which the Queen eats, thinking it to be Snow White's. In the end of the tale, the Queen is invited to the wedding of Snow White, which has the decidedly un-politically correct ending for the wicked Queen:

Then a pair of red-hot iron shoes was brought into the room with tongs and set before her, and these she was forced to put on and to dance in them until she could dance no longer, but fell down dead.

Naturally, different translations use different wordings, and modern versions omit the gory stuff entirely.

References:
http://www.pitt.edu/~dash/type0709.html
http://www.scils.rutgers.edu/special/kay/snowwhitetext.html