This is what I have written elsewhere but:
When I do ERP with like minded people (Those who I feel comfortable exploring zoo inspired fantasies or settings with) I usually have a go to setting if you will. That setting being a medium to large sized ranch and house that is pretty secluded and private from most of society. Despite this there is a delivery route for when I order things I would need to genuinely survive but that's not an important detail. What is really important is that this ranch is home to many horses I would own, I think 7-8? Maybe more? I'm not picky in that regard! In this fantasy I imagine biotech has advanced so much that not only is there a clear and morale way for horses to consent, but I am also in a physical state where I do not need to worry about hurting myself while I have my special time.
What is that special time? Its every day when I step into those stables wearing next to nothing or absolutely nothing, close the door behind me so its just me and my beautiful stallions to myself. One by one I would enter each stable, once given consent from each horse I would absolutely ravage them. Kiss them on the lips, even swallow a bit of their tongue if they wish to swap saliva with me. After that I would venture down their bodies, seeing their massive erected cocks and begin to worship. First I'd take a big whiff, sniffing all over its length dragging my nose up and down. I would also be dragging my tongue up and down its fleshy, throbbing shaft and tip and covering them all with kisses (maybe sometimes I might wear lipstick just to ensure my mark is left). Then I start to take their lengths into my mouth, feasting on their delicious meat while I ensure I'm moaning as loud as I can. I suck and bob until they graciously unload into my throat so I can eagerly swallow each glob of their wonderful semen.
If I am not orally worshiping their cocks, I prime myself in a mating position. I would even let the the breeding stud to strip me if I am still wearing anything by the time I am in my position. Often I giggle with excitement and eagerness as I become mounted by these massive beasts. I would let them rail me like the good male-mare I am for them, cumming all over myself while they stuff me. Once that horse is done I move into the next stable and the cycle repeats until everyone is satisfied and their massive balls are unloaded. But I can just end it there. How would I make income? Simple. I livestream it all. I would have a livestream set up in the middle of the stable, all with appropriate accommodations to ensure not only is there a variety of angle to view it at (on my personal website where people would pick which angle they wanted) but also allow me to do any variety of positions with the horses, maybe even with more than one. Not only that but I would take so many pictures with their dicks, my face pressed against their shafts, their balls resting on my face, tips stuffing my mouth or even post-climax selfies where I let their seed seep into my pours.
Of course this would be all from the perspective of my character, and if I am ERPing with another person their their character is also taking part in this fun and engaging activity! After all we would both be living on the ranch and even have matching horseshoe tattoos to flex online and wear with pride. Sure our characters can fuck each other too, but maybe the stallions want to get involved and not feel left out! Oh, and each stable has a spare bed in them in case I or the person I am erping with wishes to spend the night with a specific stallion for an easy breakfast in bed!
That is my fantasy I tend to do in ERPs and even did it a bit while I played FF14 with animal dick mods. I call it the Breeder's Ranch and if you all can get on board with it, I would love to expand on it even with other people's ideas or perspectives! I find it hot and fun, and who wouldn't be down for lots of consensual sex with wonderful horse cocks!