Technically, no. However, if the tail drags the ground, the horse could step on it and cause pain in the dock/tail area, causing great discomfort for the horse. The horse may buck/kick/rear/etc. The horse should NOT step on it's tail when it lands. If it does, you should trim the tail a 2-3 inches to ensure he doesn't step on it again.
My tip: If the horse cuts, he shouldn't be jumping over obstacles. If you mean leaping to cut the cow off, then his mane/tail shouldn't be so long(long enough to reach the feet). It may look nice, but it just isn't practical, sorry to disappoint. I personally do hunter-jumper/pleasure English.
Well you can cut the mane and tail, it just depends on the breed and how you're showing the horse. Cutting the mane will result in a horrible haircut though if not done right. Cutting the tail to trim up the bottom can make the tail look fuller.
Unfortunately, not much. Once the goat has decided that its fun to eat the horse's tail all you can do is wrap the tail or separate horse and goat.
Kangaroos and other macropods such as wallabies and wallaroos use their tail to balance while jumping.
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.
it looks like a horses tail, obviously.
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
the dock