An unusual sexual bond between a bull and a male donkey
phys.org
phys.org
The fact that the bull tried to mount a separate donkey makes me think he's the one whose behavior / genetics / brain etc is more interesting, since being a willing recipient feels like it could just be a pecking order thing, like how sheep listen to dogs even though the dogs are a different species
A "Christian" will say: this article is fake, suppress it, punish the authors and publishers.
A liberal will be slightly intrigued before turning back to more important things.
A "liberal" will say: them, therefore us!
An expert will have questions: deep, sharp, numerous.
Five perspectives; only one is valid. Take your pick.