4 · Society, Civilization, Culture
46 · social and economic life, transport and communication
46C · traffic and transport
46C1 · traffic on land
46C13 · animal mounts; pack-animals
46C131 · riding a horse, ass, or mule; rider, horseman
46C1314 · horses and kindred animals
46C13141 · horse
46C13141(+7) · horse (+ zoological aspects of animals in traffic and transport)
46C13141(+74) · horse (+ animal behaviour)
46C13141(+743) · horse (+ animals courting and mating)
46C13141(+7432) ·
horse (+ animals mating)