I'm not aware of any specific works that would be centered around 'animal on animal sex stories' in a non - scientific context. This kind of topic is not something that is typically explored in general reading materials. We usually focus more on positive aspects of animal relationships like cooperation, parenting in animals, etc.
There are indeed ethical concerns. When we start to focus on 'animal on animal sex stories' in an improper way, it can be a form of voyeurism towards animals. Animals' behaviors are part of their natural instincts and should be studied in the context of their habitats and evolution, not for salacious or inappropriate storytelling. This also goes against the principles of animal welfare as it can create a wrong perception of animals as objects for our entertainment rather than living beings with their own rights and needs.
One interesting true animal sex story is about the praying mantis. After mating, the female sometimes eats the male. This may seem cruel but it's actually a survival strategy. The female needs extra nutrients to produce her eggs, and the male's body provides those.
Among seahorses, it's the male that gets pregnant. This is a very unique situation in the animal world related to reproduction (which is related to sex). The female deposits her eggs into the male's pouch, and he incubates them until they are ready to be born.
Among wolves, there is a complex social structure related to mating. Usually, the alpha male and alpha female are the main breeding pair in a wolf pack. They ensure the survival and growth of the pack through their reproduction. Also, in many species of insects, such as butterflies, the male uses its sense of smell to find a suitable female for mating. The male may detect pheromones released by the female from a distance and then approach for mating.
One interesting story is about peacocks. The male peacock displays its magnificent tail feathers to attract the female. This is related to their mating behavior as the female chooses the male with the most impressive display. It's a way of ensuring the survival of the fittest genes in their species.
It is inappropriate and goes against moral and ethical norms. We should respect animals and their natural behaviors without objectifying them in such vulgar ways.
I'm not entirely sure what specific stories you are referring to regarding 'animal sex'. However, in general, when it comes to such topics in a scientific context, there are facts about the reproductive behaviors of animals. But if these are fictional or unsubstantiated stories, then they would be false. We should base our understanding on scientific research.
One good animal - themed sex education story could be about how different animals reproduce. For example, birds build nests together before mating, which shows a form of cooperation in the process of reproduction.
Bees also have interesting sexual behavior. The queen bee mates with multiple male drones in the air. This is called a 'nuptial flight'. It's a very different form of mating compared to many other animals. Understanding this can teach us about the complex social structures in bee colonies and how sex is related to the overall functioning of the hive. It also shows how in some species, a single female can mate with multiple males to ensure genetic diversity in the colony.