We hear several different packs every night. Or they move around alot. Will hear them just south of us, then south west, then south east. Never to the north, but town is towards the north, and more open area south. So far they have left the horses alone. But, A few months ago, I brought 2 rescues home, one was too far gone and he died the second night here, he was half gone by morning. We burried him, but see where they dug down to him. I cleaned up a bunch of cactus in the pasture, and put it over the site, they haven't dug anymore.
ETA: Sometimes they sound like they are just behind the house in the pasture, but we haven't actually seen them, just heard them.