* Spermatogenic activity increases within the semniferous tubules of the testes from December-July.
* Spermatogenic activity increases within the semniferous tubules of the testes from December-July.
** Testes become noticeably enlarged in preparation for the breeding season (March-August).
** Testes become noticeably enlarged in preparation for the breeding season (March-August).
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* Epididymis is composed of a mass of convoluted spermatic duct.
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** Divided into head, body and tail on the dorsal aspect of the testis as it lies in the scrotal sac.
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** Head of the epididymis receives efferent ducts as they leave the testes at the cranial pole.
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** Body of the epididymis has the main mass of the convoluting spermatic duct, which passes to the tail of the epididymis at the caudal pole of the testes.
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* Spermatic duct is a simple duct to the tail of the epididymis.
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** Passes cranially on the dorsal aspect of the testes as the ductus deferens.
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*** Medial to the body of the epididymis.
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* Ductus deferens is accompanied by the deferent artery.