Key themes in The Magic Finger.
The core lesson: if you had to live as the animals you hunt, you would understand their fear. The Greggs' transformation forces them to experience their own behaviour from the other side.
The girl uses her Magic Finger despite knowing it causes disruption. Dahl presents her moral convictions as admirable even when they cause chaos.
Dahl was writing during a period of growing awareness about wildlife and the environment. The story is a child-friendly argument against the casual killing of animals for sport.