RE: Getting your deer out of the woods?
Horses do have to be trained to not balk at the smell of blood but I've been told that mules don't have as much problem with it. Also most horses/mules that can be riden with a saddle can carry game in a pack setup, just lead them out to the truck. I'm not an expert on this but have been told that by others who have used or own pack animals.
I just remembered something else. I met a goat farmer once who told me they use some of their goats to pack in and out of hunting camps, they just can't carry as much weight so it takes more of them or more trips with them.