I've had dogs bust up a couple of hunts too!
But, the big, unknown, and curious horse was pretty scary!
Two of the other scariest hunt busters were, once when I saw a Cougar just before dark, knowing that I had to walk inthat direction to get out that evening.

My last, scary, incident was with two dogs. I had just climbed down, after dark, and was taking my climber off of the tree. I had laid my gun down, and these two good sized dogs came running at me, growling! They came within a few feet of me! I guess because I didn't back down from them, they ran off!