I live near a mini breeding farm, and they are NOTHING like this little guy. (He's cute!) Their largest mini (adult) will weigh no more than 150 lbs. And in no way do they allow or recommend anyone riding them. Companions (mainly) and light pulling (tiny carts). They call them mini-mowers!!
"If you talk to the animals they will talk with you and you will know each other. If you do not talk to them you will not know them and what you do not know, you will fear. What one fears, one destroys." - Chief Dan George