Or more accurately, two horses and two ponies. Attempted cartoonifying different horse breeds: Arabian, Shire, New Forest and Shetland.
I don't think the New Forest pony looks obviously like a New Forest. I tried, but I just couldn't catch the visual clues that make it a New Forest instead - for example - a Connemara. Apparently they have slightly big heads and gently sloping hips but that's about as much as I know.