Well, one thing I know for sure, I wish sometimes our Rottweiler had a tail so when i wrestle with him I had something to hang on too. When you're on the floor going at it...every little advantage would help alot. It may be one of the reasons why some breeds went to docking their tails for guard dogs. I know for sure if you dock a Labradors tail....he has a crappy rudder when trying to swim for ducks. Also, breeds like Beagles & Bassett hounds are desired with larger flappy ears. Because Rabbits are their main hunt, they are short dogs that need to get under brush. The long ears helps keeps debri out of the ear canal. So there's a breed that prefers long flappy ears.
I've asked the question many times about docking tails if the puppies are in pain & everyone says no. The puppy doesn't seem in pain & so I wonder if the nerve endings are not the same as an adult dog. Regardless, I think if I was given a choice between a Rottweiler with a tail...or without one...I would still picked the tail being docked. Every Rottweiler I see with a tail just looks weird. Besides, if ours had a tails, there would be a lot more things he would break in the house whipping that around.
As for wolves & boars. They are both dangerous animals. Both have been known to attack people & kill people. Boars when cornered are known to be extemley dangerous & very tough to kill because of their high threshold & will. They also been known to weigh up to a couple hundred of pounds.
I wouldn't want to meet either one in the woods, especially if I was at the wrong place or time.