Either because their breed makes them hold it high naturally, or they are going to get rid of waste or gas.
You cannot grow a horses tail, no way magically, unless you are insane and you are addicted to surgery to get a horses tail. that's all i know. Buy a foal or a colt. Let him grow. Its tail will grow with him.
Thousands of people raise horses, having their own mares and raising the babies.
it looks like a horses tail, obviously.
you raise you're horses skill by practicng the dressage at your ranch
Tail docking was orignally done to prevent the tail from becoming entangled in the harness of draught and carriage horses. Today, it is done infrequently and more likely to be done to draught horses.
Not all roping horses have braided tails. There are many events where a rider may braid their horses tail because it helps keep it out of the way.
Eohippus is thought to have had a tail like a donkey.
To make it's tail shorter.
They do it to talk to other horses in a language.
Palomino horses are golden with a flaxen mane and tail
When horses run, they raise their tails. A ride on a running horse would be riding an animal with it tail raised high. So "hightail" came to be a synonym for "move fast" or "run."
It is called a dock