One moral could be the importance of cleverness. Mr Fox uses his wits to outsmart the farmers. It shows that brains can be more powerful than brute force.
In Fantastic Mr Fox, Mr Fox is the lead character. He's not just an ordinary fox; he's a family - oriented one. His family, including Mrs Fox and their children, are also part of the story. Then we have the three farmers. Boggis is a chicken farmer, Bunce raises ducks and geese, and Bean has a large apple orchard. Their different characteristics and their feud with Mr Fox make the story interesting.
In Fantastic Mr Fox, Mr Fox is a clever fox who steals from three mean farmers - Boggis, Bunce and Bean. The farmers are furious and try to catch him. Mr Fox digs tunnels to outwit them and ends up creating an underground community for all the animals. They have a big feast using the food Mr Fox has stolen over time, and they live happily ever after despite the farmers still waiting above ground.
The main character is Mr Fox, of course. Then there are the three farmers - Boggis, Bunce and Bean. Also, Mr Fox's family, including his wife and children, are important characters. And other animals like Badger, Mole and Rabbit play significant roles as they join Mr Fox in his underground community.
He often uses unexpected twists. For example, in some stories, he starts with a seemingly ordinary situation like a person traveling and then suddenly something very strange happens.
In 'The Landlady', one of the key aspects is the sense of unease. The landlady seems overly friendly at first, which immediately sets an off - putting tone. Dahl is masterful at creating this kind of subtly creepy atmosphere.
In my opinion, 'The Witches' is quite scary. The idea of witches secretly living among us, plotting to turn children into mice, is terrifying. The grand high witch is a particularly menacing character, with her plans for mass transformation of children.
Dahl uses vivid descriptions. For example, in some stories, he describes the settings in great detail. Dark, creaky old houses with strange noises and shadows are common. This immediately sets a spooky mood.
I think 'Lamb to the Slaughter' is very popular. It has been widely read and studied due to its clever plot and unexpected twists. The main character's actions are both shocking and yet somehow understandable in the context of the story.
His writing style is very vivid. For example, in many stories, he describes characters and settings in great detail, making them come alive in the reader's mind.