skin
horses are mostly found in grasslands
A swan is mostly covered with feathers.
Probably mostly because horses today are used mostly for riding, not for breeding.
The surface of earth is covered mostly by water.
Horses are mostly used for work or for competitions.
Today, people in America ride horses mostly for pleasure.
In 1989' a Nation that is mostly covered in dense forest?
Mostly gated horses or trotting horses like the Tennessee Walking Horse or Saddlebred.
mostly oats
Grass
Earth. Over 70% of Earth's surface is covered by water.
Lemurs are covered with fur.