One was when Jenna was pulling Rosie through the streets, taking her to the place of the race. In one scene, there are no straps connecting the sled to Jenna,
Another was when Steele, Nikki, Kaltag, and Star where in the alley antagonizing Balto. Kaltag hits Star in the head (for like the second or third time!), and it shows Star as missing a tooth.
When Star gets up and shakes the snow off his head, he says something to annoy Kaltag, and you can plainly see that he is no longer missing the tooth!
Here's one that someone pointed out to me in a comment on my previous article where you can't see Boris' beak line.
One last thing: in this scene, the colors on Dixie's ID tag were inverted.
Scene 1 (Wrong):
Scene 2 (Right):
These are really no big deal; this is nothing compared to Wolf Quest (look or my upcoming article). I really don't like criticizing Balto, but I saw these and thought I'd point them out. Tell me what you think!