Grey is a colour not a breed..so can be any height of pony upto 14.2 hands.. or over that height for a horse!
A horse that's 4' 3" at the withers will be 12.3 hands high.
I will assume you are asking about Impressive the Quarter Horse. Impressive was 15.1 hands high.
Depends on the horse's breed but her horse on her show Hannah Montana Forever is about 15 hands Her real horse is about 16
Friesians can range anywhere from 15.2 to 17 hands high on average.
Over seventeen hands tall.
A Hand is equal to 4 inches or 1/3 of a foot.A 7 foot horse would be 21 Hands.
A grey horse with many tiny flecks is called a "flea bitten" grey. A grey horse with many blotchy looking spots is called dappled.
A pony is under 14.2 hands high and on the other hand the horse is 14.2 hands high and over.
That would be 13 hands high.
If you are playing Howrse the answer is 4 hands. It is a pretty easy level. Good Luck!
'Radar" The worls tallest horse 19 Hands 3-1/2 inches tall (6' 7-1/2")
A normal sized Percheron can be from 16 to 18 hands high at the wither (shoulder). A hand is four inches.