"It doesn't count, because they're both horses." "Yes, but only one of them is a sentient, talking horse, which means it's a sentient creature having sex with a dumb animal." "Does that mean a sentient horse having sex with a human reduced to an animal's brain would be bestiality, but from the opposite direction you'd expect?"
Thought Experiment
"Yes, but only one of them is a sentient, talking horse, which means it's a sentient creature having sex with a dumb animal."
"Does that mean a sentient horse having sex with a human reduced to an animal's brain would be bestiality, but from the opposite direction you'd expect?"