In general, ponies are small-sized members of the horse family, but not every little horse is considered a pony. The technicalities and terms can be blurry, but ponies and horses are usually defined by height.
Jodi Henke is a Contributor at Successful Farming. She focuses on topics related to agriculture and rural life, serving as the writer and host of the Successful Farming/Living the Country Life National Radio programs, as well as producing podcasts and articles for Successful Farming magazine. Jodi's work has been featured in Successful Farming.