Typically no, but if the horse interferes with himself (hits his opposite foot) while moving then it would be a good idea to use them.
Well they are round if you take good care of the hooves! The hooves need special treatment! They need to be shod every 4-6 weeks! This meens that they need new hooves!
In domestication horses need their hooves trimmed to keep them a proper shape to avoid lameness. In the wild horses 'trim' their own hooves by walking on rough ground which wears them down.
Probably the only time you need to put grease horses hooves is when the bolts don't come out. But that's only give there rusted or they won't come out
Horses hooves grow like out fingernails do. Also like our fingernails, horses hooves need to be trimmed and maintained. Poorly cared for hooves lead to a ridiculous number of problems, the first being cracks in hoof wall, lameness, inability to walk... the list goes on.
To stop their hooves wearing down on unnatural, man made, hard surfaces.
Horses don't have toenails, they have hooves. And yes, usually they need to be trimmed regularly. Many horses are shod, and will need new shoes something like every 6 weeks. Even an unshod horse will need its hooves trimmed, unless it somehow manages to get enough natural wear from moving around in its paddock to keep the hooves at a suitable length, which would be quite rare.
Horses have hooves because that is the way they are, why do humans have feet. But horses need shoes because their hooves get damaged very easily when walking around, and it is very painful for the horse when their hoof gets cut, punctured, or otherwise damaged. And because they make a cool clickety clack sound when they walk!
Cats and dogs have paws, but horses and cows have hooves.
The amount of oiling or 'greasing' a horses hooves will need will vary according to the conditions it lives in. Some horses may need it weekly, while others only during the wetter or drier seasons, it really just depends and it would be best to consult a equine farrier or equine veterinarian for the best answer. Keep in mind that the color of a horses hooves in no way affect how often they need maintenance.
Usually in very dry areas once a day would do.
Horses need their hooves trimmed, teeth floated, vaccine shots, monthly wormer, and proper grooming and exercise. If that is what you are asking.
its just for show There are some horses that hit their front feet with their back hooves during their gait - in this case, it is for protection (example: racehorses). Sometimes, the owner is trying to alter the horse's gait (American Saddlebred).