What are an Arabian horse's adaptations?

The Arabian horse of course has all the same adaptions that other breeds and types of horses do, but they also developed the ability to go long periods without water or food, and to survive off of sparse food. They adapted a light springy gait for moving over the deep sands of the Middle East. they have large nostrils for pulling more air into their lungs as they run which aids in their endurance. They also adapted a smaller more compact body which helped them to survive.