There exist neural substrates that control bilateral limb coordination, particularly in the lumbar spinal circuits controlling the hindlimbs of quadruped mammals.
Because of this movement, quadrupeds are restricted to one breath per locomotor cycle, and thus must coordinate their running gait and respiration rate.
During this yard period, her kingposts were replaced by quadruped masts, her troop berths were removed, and temporary cargo storage cages were installed.
