Snake and Lizard Reproduction - Anatomy & Physiology

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Lizards (Squamata)

Male

Testes

  • Located cranial to the kidneys.
  • Attached to the dorsal wall by a mesochorium.
  • In some species, the kidney has a posterior sexual segment that becomes swollen during the breeding season and contributes to seminal fluid.
  • Right testis lies cranial to the left.
    • Intimately connected to the vena cava by short blood vessels.
  • Left testis lies close to the adrenal gland.
    • Has its own testicular blood vessels.

Phallus

Female

Breeding Season

Snakes (Squamata Serpentes/Ophidia)