shire horse
Some horses require a lot of grain, like brood mares and working horses.
Many working horses "on duty" in the UK are police horses or members of the Queen’s Household Cavalry.
Premium hay for working horses currently sells regionally for as much as $200 a ton.
When I was a child, we used to sneak into farmers' fields after dark and ride on the working horses.
The animal sanctuary is to close, threatening the lives of several former working horses.

SMART Vocabulary: related words and phrases

Horses & similar animals
Arab
Arabian
beast
beast of burdenidiom
bronco
chestnut
donkey
equine
filly
gelding
hoof
horse-drawn
hunter
palomino
stallion
steed
thoroughbred
trotter
yearling
zebra

You can also find related words, phrases, and synonyms in the topics:

Animal farming - general words