If you mean 9.0 hands then your pony is 36 inches tall at the withers (located at the bottom of the mane). a hand is 4 inches
how tall pony
If you are too tall for a pony, ride a horse instead.
a pony is a horse under 14.2 hands tall.
pony
You could have a pony about 13.0 hands tall but no smaler and a horse at any size but you might want one 15.2 hands tall or shorter.
They can be up to 14.2 hands.
up to 42 inches tall
if you are small enough yes but if you are tall then no
Around 16hh
A large pony.
A true pony is 14.2 hands and under; a horse is over 14.2 hands.
Best to ask a gunsmith for help.