The moral could be about acceptance. Just like the little black lamb might be different from the others, it shows that being different is okay and we should accept everyone for who they are.
The main character is surely the little black lamb. There might be other animal characters such as white lambs that contrast with the black lamb. And if it's a farm - based story, there could be a farmer who takes care of the lambs, and maybe a dog that guards the flock. The story could also have some birds or small rodents in the background that interact with the lamb in some way.
I'm not sure specifically which 'little black lamb story' you mean. It could be about a little black lamb's adventures, like its journey through a meadow, making friends with other animals, or facing challenges on a farm.
Perhaps the 'Black Lamb Children Stories' include stories that teach important lessons. For example, the black lamb might face difficulties like finding its way home in a storm, which shows children the importance of perseverance. It could also have stories about sharing, like the black lamb sharing its food with other hungry animals in the forest.
I'm not able to recommend a particular story from 'Black Lamb Children Stories' as I'm not familiar with the book. But generally in children's story collections, there could be a story where the black lamb overcomes a fear, like being afraid of the dark and then learning to be brave. Such stories are common in children's literature and can help kids develop positive qualities.
The lamb in the story has multiple significances. Firstly, it is a literal object, which is used as the murder weapon. Secondly, it represents Mary's innocence in a way at the start. Just as a lamb is often seen as a symbol of meekness and innocence, Mary was like that before her husband's news. But then it becomes a tool for her to commit a crime, which is a kind of ironic twist on the traditional symbol of the lamb.
It might also be a symbol of power or control. If a character has control over the leg of lamb, whether it's in terms of cooking it, serving it, or using it in some other way, it could show their position in the family or social hierarchy within the story. For instance, if a mother is in charge of cooking the leg of lamb, it could show her role as the provider and caregiver in the family. Moreover, if the leg of lamb is stolen or fought over, it would further emphasize its value as a symbol of power.
I can recommend the following novels about reborn lambs: Reborn in the End of the World: Not a Silent Sheep, Reborn: Not a Sheep of Fate (Gwen's Garden), Always Reborn (a lamb waiting to be slaughtered), The Happy Life of a Reborn Nanny, Reborn like this, right? These novels covered science fiction, modern, urban, and other different topics. The readers could choose to read according to their preferences.