What are the risks of leaving a Doberman's tail unlocked?

How would you go about locking a dogs tail?

I've seen a Dobie with undocked tail.  Its long and whip like.  He can damage it more easily.

There are not risks at all, that I know of. Docking tails are done with in three days of birth when the tail was just grizzle, docking the tail of an adult dog is major surgery cause now it is bone & not just grizzle.

Imagine a situation where an undocked Doberman got its tail caught in an elevator door. The elevator would leave causing the tail to be ripped off. Most of the skin on its butt and back would follow. As would its spine and intestine. This is why docking Doberman dogs is the rational solution.

If its a working dog, there is a risk of tail injury.

If this is just a pet..  A condition known as "happy tail", especially if the tail is very whip-like.

None at all it was a problem when they were bringing down stags perhaps, but dogs use their tails for balance and also as a signalling device, a very important one.

how about we cut off your little finger. Would u think u were missing something.

There was never a risk...

"Undocked". 

Presume that's a typo and you mean undocked. 

I don't think there are any dangers.   I have Rottweilers with tails now and they benefit the dogs not hinder them.   We heard all these stories prior to the ban that there'd be loads of tail injuries but they are rare.