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.
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.
Male peacocks display their large and colorful tails to attract peahens. The more elaborate and colorful the tail, the more likely they are to find a mate. This is a form of sexual selection, where the female chooses the male based on his physical characteristics related to reproduction.
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.
The praying mantis has a rather strange sexual behavior. Sometimes, during or after mating, the female may eat the male. This is thought to provide her with extra nutrients for egg production. It's a gruesome but true aspect of their reproductive cycle.
In the world of peacocks, the male's elaborate and colorful tail feathers play a big role in sexual selection. The males display their magnificent tails to attract female peacocks. This is a true story of how physical appearance is crucial in the sexual behavior of these birds. The more vibrant and large the tail feathers, the more likely a male is to attract a mate.
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.
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.