Check out these educational videos for veterinarians and curious eyes on the anatomy of the male reproductive tract in the bull. Here you will see, in three parts, the scrotum of the bull, which contains both of the testes. The scrotum is a thinner skin area of the rest of the beast, with less hair. Upon dissection of the male bovine scrotum, you will see the tunica dartos muscle and some stratum tissue. The testes is the structure that contains the sperm producing cells.
This is a great video tutorial for anybody interested in the anatomy of the reproductive tract of a mall bull, especially veterinarians.