A horse is usually fully grown once it is five to seven years old. However, it will grow very rapidly in its first year, reaching about 90% of its fully grown height in that year. [2] X Research source The age of a horse is usually determined by inspecting its teeth. To definitively determine the age of a horse, take it to a veterinarian. Your veterinarian will inspect the horse’s teeth and determine its age.
To measure an equine, place the end of a tape measure on the ground next to your horse or pony. Extend the tape measure up to the level of the withers. Once you get a measurement from the tape measure, you should divide it by 4. This will give you the number of “hands high” your horse or pony is. The withers is the point on a horse or a pony where the neck and the back join.
In addition, they come in a wide variety of colors, such as appaloosas and pintos, just as non-miniature horses do. [7] X Research source
Quarter horses are all horses, even though some of them are shorter than a horse should be. Finding out the breed of a horse may be as easy as asking its caretaker what breed it is. You can also ask the animal’s veterinarian what breed it is.