This is a video potcast of the reproductive tract of the dog. This features a still image of a dissected testis from a dog with audio commentary. Relevant anatomy is highlighted as it is described by the anatomist.
For further information:
Reproductive System Development
Accessory Sex Glands
Cast of the testicular blood vessels potcast
Isolated canine testis potcast
Canine Reproductive System Dissection Resources(I&II) Dragster
Comparative Male Anatomy Resource Dragster