Its a bacterial infection influencing the skin, causing bald spots. To prevent rain rot you should try to keep your horse dry, by either blanketing the horse or providing a shelter that is dry and easily accessible. Once the horse has rain rot however you'll need to treat it, which can take time and patience. You will need to bath the horse in medicated shampoo, dry his coat thoroughly and then apply something along the lines of petroleum jelly to the scabs only and allow them to soften then peel them off. You will also need to sanitize all of your horses equipment to prevent re-infection.
I don't think you have much to worry about. Although rainrot is a fungus it's not really contagious from one being to another.
There are several ways a horse can loose its hair. Either by a fungus such as rainrot, or something it got from a poininous plant and started scratching itself raw.
RainRot
Yes! Rainrot is very contaigous to horses. Once you spot it, mix a little iodine in shampoo until it is like a little darker, then bathe them with the little iodine/shampoo.
Rain rot can occur in other areas than the back but if your horse has white sock's of white markings on his legs than it may be mud fever
horse is defferent this humans
Depends on the horse, like humans diffrent horse have diffrent characters
Most of them can
The use of horses are that weused to travel on them and now we do rodeos and horse races.
two the same as humans
it eats grass or humans give it to them
hoof clippings
A horse, like humans, has two nostrils.