A BOY A GIRL AND A DOG (1946) Jerry Hunter - Sharyn Moffet - Lionel Stander
In World War II a young boy and girl find a lost dog and take it home.
They live in an appartment building with a no pets rule so they hide the
dog in an abandoned appartment. When a roober breaks in and the dog
attacks, blowing his cover, he is enlisted in the K9 Corps and serves in
the war effort.