certain horses are called by names givven to the breed, age, sex, health, or stage of maturity.
The hair on the horses neck is called a mane.
I'm not familiar with horses being called "bobos." It is possible that this is a regional nickname or slang term for horses in certain areas. However, it is not a commonly recognized term.
Horses are just called "horses" unless they are in a group together. When horses get in a group together, they are then called a "herd".
they are called mustangs. they are the American wild horses. Australian wild horses are called brumbys.
A dozen horses is usually called a 'string' of horses.
They are called a herd of horses.
Horses, generally.
American wild horses are generally called mustangs.
A herd of horses
a herd of horses
A group of horses can either be called a band or a herd.
Adult female horses are called mares. Adult male horses are called geldings (castrated) or stallions (not castrated or uncut).