A small mammal searches for hope as she makes her way across a bombed-out city in the new animated short Little Shrew, set to Kate Bush’s song “Snowflake,” from her 2011 album Fifty Words for Snow.

For a long time, cartoons were reserved for children on weekend mornings or evenings after school. Shows like The Flinstones, Hey Arnold!, Recess, and The Jetsons are obviously for children. That is ...