This is completely unethical. Incestuous relationships are not acceptable in society, and involving a dog in any inappropriate way is also morally wrong.
Sharing such stories is completely inappropriate and unethical. These are family relationships that should be respected and protected, and any form of sexual content related to family members is unacceptable in a civilized society.
One way is through age - appropriate books. For example, there are children's books that use simple analogies like the birds and the bees to introduce the concept in a very basic and non - explicit way. The story can focus on the differences between boys and girls in a biological sense first.
In a family, the mom was very gentle and often told bedtime stories to the son and daughter. The dad was strong and would play football with the son on weekends. The daughter was a bit shy but she adored her big brother. One time, the son got into trouble at school. The mom was worried, and the dad went to the school to talk with the teacher. The daughter made a 'get well soon' card for her brother. They supported each other as a family through this difficult time.
It helps the daughter have accurate information. If parents don't teach, she might get misinformation from peers or the Internet. For example, she might hear wrong ideas about how babies are made. By parents teaching, she gets the facts straight.
Tell a story about the human body's development. Start from the very beginning, like how a baby grows inside the mother's womb. Explain that this is a result of a special connection between mommy and daddy. But keep the language simple and positive, and don't go into details that are not suitable for children. You can say that it's a wonderful gift from nature that mommy and daddy can create a new life together.
In a family, the mom and son might be working on a DIY project in the garage, like building a small bookshelf. Meanwhile, the dad and daughter are in the kitchen baking cookies. These activities not only bring them closer as family units but also create memories. Each pair has their own way of interacting and having fun, which is an important part of family life.
There is no such positive story because any form of sexual relation within a mother - daughter context is completely unethical. We should look at positive mother - daughter stories that involve things like mutual understanding, care, and growth in a non - sexual way.
A story could be that the daughter wanted to learn how to ride a bike. The dad held the back of the bike while the mom cheered her on. After a few falls, the daughter finally got it. The proud looks on the mom and dad's faces were priceless.