Originally Posted by fanch
A miniature horse is any animal 38" or under at the last hair on the mane. From my experience, minis do most of their growing in the first 18 months of life but may continue to grow slowly until their around 5 years of age. For example, I bought a horse at the age of 19 months and he was 31.5 inches at the last mane hair. He was permanently registered at 5 at 32.5 inches. I don't think you have to worry about her outgrowing her "mininess"
Not correct... a mini is a horse and not a pony and ponies can be under 38" and not be a mini horse. AMHA the permanent registration papers are given at the age of 5 with the AMHR they are given at the age of 3.
Lot of knowledge from my best friend who just won two National Championships 2x top 5 and 4x top ten in her first year at the Mini Nationals in Tulsa OK this year