Join Date: Mar 2010
Location: Ontario, Canada
The reason it depends on the horse is conformation. Technically it is the horses shoulder angle and length of front leg that will tell you if a horse will have a smooth trot or not.
A short leg and closed shoulder angle will give you a short choppy stride no matter what the breed is.
A longer legged horse with an open shoulder angle will have a smoother trot.
That being said my first mare was short legged but had an open shoulder so was able to stride out more, for a smoother ride.
I will try to find some examples. Its easy to see :)