telling whether it was before or after the animal is killed is hard - could something of been dragging them to somewhere for lunch? I just cant tell without seeing the kill!
personally I've come down on the following two scenarios ;
1) Animals killed by large dog coming off the road, either left in situ or dragged abit, one in the open eaten partially by animals etc and red kite (counted 4 circling a rabbit on the road yesterday so not impossible they stripped it), the lamb near the horses was left as no scavengers wanted to disturb it, too open, exposed and near big animals, one or two tried to drag it hence bite marks, but were un able to move it.
2) Un known death of stripped animal, same fate as above, and animal in field with horse was killed by horse hoof contact and it was just a co-incidence they happened together.