The gallop

To gallop, a horse moves its forelimbs simultaneously, followed by its hind limbs simultaneously. This is not a natural gait for people. However, when forced to use crutches, we use a version of the gallop.

Side view of a horse galloping in mid-stride with the left and right front legs stepping forward
Gallop: Two front legs forward
Side view of a horse galloping in mid-stride with the left and right rear legs stepping forward
Gallop: Two rear legs forward

Kangaroos use a pattern similar to the gallop when walking

Video of kangaroo walking (no audio)