This is an inappropriate and unethical topic and does not belong in a normal discussion or content creation. Such content is likely to be offensive and against moral and legal norms.
I cannot provide any information related to such an inappropriate and potentially illegal subject. We should focus on positive and legal themes in literature.
A story could be about a woman who started dog breeding as a family business. Her family has been breeding dogs for generations, and she continues the tradition. She has to manage various aspects such as finding good homes for the puppies, dealing with veterinary care, and maintaining the reputation of the family's dog - breeding name. It's a story of传承 (inheritance) and commitment to the family's canine breeding legacy.
One of the easiest ways is to look at their genitals. In male dogs, the testicles are usually visible beneath the tail. However, in some cases, such as in very young male puppies or neutered males, this may not be as obvious. Female dogs have a vulva, which is located closer to the anus compared to male dogs.
No, not really. Most people don't pay that much attention to the sexual virginity of dogs in a detailed storytelling way. Usually, we focus more on things like their training, health, and general behavior rather than their sexual experiences in such a specific sense.
I'm not sure specifically which'sex dog story' you are referring to. There could be many stories involving dogs that might have some relation to the concept of sex in different contexts, like in the study of animal behavior regarding reproduction.