At what age should a mini be before you let weight appropriate children ride them? I have been seeing a lot of sale adds for minis that are "ready to ride" as young as 6 months with the average being 10 months. I got Yazhi at 10 months old and he was tiny, no muscle tone and very immature. He is now 2 1/2 and we just started cart training. Most of the adds are from breeders and people selling "party" ponies. I'm concerned about the horses physical development at such a young age. Am I missing something between minis and horse?