Seems pervy to me, even without any penetration. The animals, presumably, would have no choice in the matter! I suppose some would say they ''like it'' but if non-penetrable sexual acts were performed on human beings without their consent, it would still be illegal even if they derived some basic sort of pleasure out of them. It's abuse.
Ugh. Still I suppose the judge didn't mean it quite as it was reported and for the man who was prosecuted for sexually abusing stepdaughters, it was a relatively minor crime in the scheme of things; as he would be given a stiff sentence anyway there wouldn't be much point in adding to it, never mind having to work out how long to give him.