When I was a kid, there was a rendering company in Spokane that would come out and pick up carcasses. I don"t know if they are still around. I haven"t smelled the odor of stuff rendering in the East side of Spokane for years.
Once we had the misfortune of lightning hitting a pine tree with cattle sleeping beneath it. We found them the next Summer day, and they were already smelling bad. We were really glad that the rendering company would come out and pick up the ruined carcasses for free. It would have taken a whole lot of digging to bury all of them. It sure took any profit out of our cattle operation for a year or two.
I don"t have cattle any more, but occasionally a deer gets hit on the road and dies on my property. I generally will drag a dead animal with the tractor to a spot on my 20 acres where I won"t have to smell it at the house. The coyotes, ravens and magpies and other animals take care of any carcass I have done this with in a couple of weeks.
I also try to be considerate to my neighbors, but the wind usually blows more or less the same way.
I don"t know what I would do if my property was smaller. Good luck!