Y'all, I have a tiny 2-year-old. He'll be 3 in September. He's not even 14 hands yet. He's bred to the hilt...as a cutter. I'm 5'5", around 140. I could stand to lose 20 lbs to get back to my normal size (hurricane Laura stress, I could write a book). I know these foundation-bred cow horses can mature later and grow well into their 4-5-year-old years. But I'm panicking. My best horse was only 14.2, but this guy is just so short! He's about as wide as he is tall, so he does have that going for him. I've been debating on selling or keeping him, but he's just about to turn 3, so I want to give him a little longer. Have you had horses gain inches at this age? 

Rocket...I’m close to being in the same boat as you....my 2yo is barely 14h and should have already been broke but I’ve been waiting bc she’s so short! She’s as wide as she is tall. I’m about your size and I’m a bit concerned too, meanwhile my yearling has passed her height wise lol

Some of the fastest small equines are POAs. All 56" and under (which is like 13.3, I think)  These were old school ponies though, not the new ones bred with QH. Not saying there aren't still some fast ones bred with QH, but they're doing it more for the pleasure strides than the fast ones. 

 They'd outrun the horses. This was also back in the days of no divisions, so if you weren't winning, you most certainly weren't 1D.   

This little midget is 13.3h. She doesn't know she is little. She is a complete heathen outside the pen. Bossy *****y and a handful. But loves her job and is consistently 1D/2D.  More 1D this year

Brittney Barnett's paint mare is tiny and look at what she did up at Calgary let alone making it to the NFR last year. There are unicorns of all sizes. I always say it's easier for a big horse to cover up a mistake (like going past a barrel) just in stride, but you can't beat a horse with heart.

lik someone else  said  hotshot did it all for years.

in ga that was a badass pony  called li red pete and bekki carter bred her raised her   she was 49 3.4 inches yes chad shepard mom bought her

she went to the nbha in augusta ran 1d time barely srubbs over the barel to have gone to final. think that was 96

my son raisespeed mare barely 14.2  ishe was pretty sporty

I like a compact horse (with a short neck), which cutting sire seems to be producing speed, and is in the 14 hh range?

My mare pictured above that is 13.3H  is cow/foundation bred. She is grandaughter of PG Dry Fire by Playgun and all foundation on dam side 

Bloodlines aside, speed is wherever you find it. What a phenomenon.

I dont think anyone has mentioned BabyFlo. Teeny Teeny Tiny. Did just fine. :)