16 to 18 hands tall.
That depends on the breed.
No, the thoroughbred is not the tallest horse. Draft horses, like the Clydesdale, are generally taller. The thoroughbred however, is leggier, so the breed can often appear to be above average in height.
Buckskin is a color, not a breed.
A draft breed is any breed of horse with a certain type of conformation that is conducive to heavy pulling power. Examples would be Shires, Brabants, and Percheron's. They can typically range in height from 13.2 hands and up, but most draft breeds start at 16 hands. They typically are heavy boned and 'bulky' in appearance. Draft breeds are called 'coldbloods' due to their slow and docile nature.
Average size for an average non-pony breed would be between 15 to 16 HH.
Pinto is a color, not a breed and therefore does not have a single height definition. The pinto patterns appears in many breeds from tiny miniature horses all the way up to massive draft horses. That means that a pinto can be of any height.
Percheron is the breed, the type is draft.
The average height of a Morgan horse is 15 hands which is equal to 60 inches. The average weight of a Morgan horse is 1,000 pounds. At one time, the main use for Morgan horses was harness racing.
A Clydsdale is one breed of Draft horse. If you breed a draft horse ro a regular horse, you get what is commonly called a "warmblood", which are heavier than regular horses, but lighter than draft horses.
probally when they grow older when they are about maybe the average height
A horses weight varies from breed to breed, but the weight of an average riding horse is typically 1,000-1,200 pounds. With Ponies falling below this and Draft horses more than this.
It depends on the breed. Most of the time it is colors of the coat, the height and weight, and proper dimensions for that particular breed. Then if your dog's breed has specific characteristics (like longer than average ears), those are looked at as well.