A beautiful character layout sketch of Lady is being offered currently at Heritage Auctions. Frank Thomas drew this lovely pose of Lady as he was planing the scene. The size of the character, the camera fielding etc.
Her concerning attitude is toward Jock and Trusty. Lady explains her hurt feelings when her human owners start to treat her differently than before. A baby is on its way.
As you can see here, Frank worked on his drawings in order to get the right emotion while defining the proper anatomy of a cocker spaniel. Absolutely Beautiful!