I recently purchased a 3/4 thoroughbred 1/4 appaloosa yearling gelding. Both his parents are over 16 hands high and his full brother is 17 hands. This little guy is just over a year old and somewhere around 12 hands (I've had him less than 12 hours so I haven't had a chance to measure him yet). He isn't skinny and he looks well looked after but he is just so small. Does anyone have experience with horses that have slow growth or lack of growth?