Ethical concerns abound. In our society, we have established norms for human - human relationships. When it comes to female animals and male humans, it becomes a very murky area. It's not natural or ethical to have relationships that cross the species barrier in inappropriate ways. This could also lead to harm to the animals both physically and psychologically.
No. Such content involves explicit and often non - mainstream sexual themes that are not suitable for mainstream literature which usually adheres to certain moral and ethical standards.
No. Such stories are often highly inappropriate and involve private and sexual content that is not suitable for public sharing. It violates social and moral norms.