Don't forget that many Arabs used to be
trained for 5-gaited classes. I've ridden several that amble, and while
I've personally not ridden any that rack, history certainly tells us that many
were quite capable of learning to rack. Some lines are more proficient at
learning different gaits than others as well.
I have ridden an arab mare
that racked! (pure arab, kemosabi grandaughter) She wouldn't
hold it for long, but I knew I was feeling a rack. She belonged to a
friend that I was riding with, so I mentioned it.. she said "Yes, she
racks. I used to ride her with a walking horse and she picked it
up." Personally, I didn't think it possible, but she definately
was racking.
