USA discourage their horses from using diagonal gaits, emphasizing the lateral gaits exclusively, though in Colombia, the diagonal gait is more often considered acceptable. The Peruvian Paso has an even lateral gait known as the paso llano, which has the same footfall sequence as the running walk, and is characterized by an elongated and lateral motion of the shoulder known as termino. The faster ambling gait of the Peruvian Paso is called the sobreandando and is slightly uneven, similar to the stepping pace. The Peruvian Paso may also fall into a diagonal gait, the pasitrote, as well as a pace-like gait, the huachano, both discouraged in the breed. Other lateral ambling gaits The Marwari and Kathiawari breeds of India often exhibit a natural lateral ambling gait, called the revaal, aphcal, or rehwal. The Mangalarga Marchador performs the marcha picada, a four-beat lateral gait, similar to a stepping pace or singlefoot. The breed also performs a four-beat diagonal gait. The picada, which means "light touch" in Portuguese, is usually the smoother of the two ambling gaits performed by the breed, because the lateral movement creates little vertical momentum, and is similar to the paso llano of the Peruvian Paso. Diagonal ambling gaits The only diagonal ambling gait is called the fox trot in English, though it is given other names in other countries. The diagonal footfalls are usually slightly uneven, occurring in "couplets" of a 1–2, 3-4 rhythm that gives the rider a slight forward and back sensation when riding. They are considered physically easier on the horse than the lateral gaits as less hollowing of the back occurs when the horse is in the gait. Diagonal four beat gaits are classified as an alternative ambling gait, even though derived from the trot rather than the pace. The genetic mechanism that allows diagonal ambling gaits appears to be the same gene responsible for lateral ambling gaits. The fox trot is most often associated with the Missouri Fox Trotter breed, but is also seen in other breeds. The fox trot is a four-beat broken diagonal gait in which the front foot of the diagonal pair lands before the hind, eliminating the moment of suspension and giving a smooth ride said to also be sure-footed. The gait is sometimes described as having the horse walk with the front feet and trot with the back. In a fox trot, the horse must keep one