Thanks for that, Sinsull. I notice they covered all eventualities:
"But the instructions also cover what it calls the 'worst crime', described as an obscene act perpetrated by a cleric with 'youths of either sex or with brute animals (bestiality)'."
Very holy, I'm sure.
Even if it never actually happened with animals, they obviously didn't trust their priests not to do it. And they thought of it.