i would go along with a fully mature red stag, i was down in cleethorpes coursing about 5yrs back and we put one out of a dyke , it was a monster weighing well over 1000 with a full set of antlers, i'm no deer expert but i cant see any dog pulling that down single handed, it ran straight in front of our moter without a care in the world clearing a hedge and a ditch as if it wasnt there, over the years we have hunted that land ive noticed the footings about but that is the only time ive seen it, i was amazed that an animal that size could stay out of sight with not much cover about.
my pal jo