Because the first Balto wasn't meant to be a musical, unlike most Disney movies. In Balto 2 and 3 Universal made the director Phil Weinsten put some songs in the sequels, so the children would have been happier (this is what I've heard).
wearedoomed wrote:
I guess because no one really thought that songs would do the movie any good. That's one of the reasons I like the 1st Balto; it's not just some other 70-minute, fun-for-the-whole-family style sing-a-long!

The Lion King?