I've been considering breeding a little Polish Arabian mare I own. Her site is Ganges. She's 14.3 or 15h. Would like to breed her to a larger Irish Sport Horse but it doesn't work that way does it? You want the sire to be the smaller of the two so te baby isn't too large for the mother's pelvis. Curious as to your alls thoughts. Wanting to add her good temperament, intelligence and athleticism/endurance to a larger horse with better jumping abilities and a little less sensitive to extraneous stimuli.
In case you didn't already notice I know NOTHING about breeding.