I'm trying to figure out the name of this movie. All I remember is there are beavers in it and a king, and the king eats the beavers. They get an artist with a magical paintbrush to help them. Please help!

Is it maybe "The Elm Chanted Forest"?

The Elm Chanted Forest (1986) (http://imdb.com/title/tt0268282/)

That's it! Thanks!