Continuity mistake: The stick that the hag uses to try to push the rock over the cliff to the dwarfs appears out of nowhere between shots.
Continuity mistake: When Snow White falls asleep on three beds, the rabbits sleep on one more and the deer on another, making 5 beds occupied, but when the dwarves come back three more beds of animals wake up making a total of 8 beds. In a previous scene Snow White looks at the 7 beds with names, not 8!
Continuity mistake: When the queen is transformed into a hag, there is a big wart on her left hand. This wart later disappears.
Continuity mistake: When the queen is holding the poisoned apple on a string, the knot on the stem changes between shots.
Continuity mistake: When the dwarves see their table in the beginning, some of the dinner utensils are blue. But later, when the dwarves run down for dinner, none of them are blue, they're all white.
Continuity mistake: There are six doves sitting on the wishing well in the start, but at least eight different ones are seen flying away when the prince comes.