Coccygeal muscle

Origin: Ischiatic spine, cranial to the internal obturator muscle.

Insertion: Transverse processes of the second to fifth caudal vertebrae.

Action: Bilateral to press the tail against the anus and genital parts and, in conjunction with the depressors, to draw the tail between the rear legs. Unilateral, lateral flexion.

Nerve: Ventral branches of the third sacral nerve.