Spine

extrinsic muscles:

longissimus -

iliocostalis -

iliopsoas (psoas major and minor and iliacus) -

intrinsic muscles:

splenius -

sternocephalicus -

longissimus -

multifidus -

spinalis -

ligaments:

nuchal ligament

supraspinous ligament

interspinous ligament

sacroiliac ligament (equine)

sacrosciatic ligament (equine)

sacrotuberous ligament (canine)