Dogs are animals that love humans and are not bred to have sex with humans. Their nature is violated when they are used for making pornography. As a christian I also feel Beastiality is a sin. But I understand not everyone will have that viewpoint. But dogs horses etc are loving creatures who should not be subjected to this. Even Hollywood has rules when making movies that animals are not harmed during the making of a film if they are used in it.  Sex with animals is just not ok. If all humans decided to do this mankind would end and no woman would get pregnant. But that would be the worst case scenario lol. Please stop using animals to make porn videos. You can still make lots of money just making it with willing humans.