I have seen articles on pack goats. I would think, that they would make excellent decoys, or at least allay any skittishness on the deer's part, they are pretty much just a domesticated deer. My Lieutenant in the FD, had one, and it was hand raised, and he came home late one night, and drove up to the house, and he had the window down, so he could stick his hand out with the garage door opener, which was picky, and as he turned to stick his arm out , and here is his goat with it's face an inch from his! He pretty much chewed a hole in the seat!
Wayne