Like all reptiles, snakes - dioecious animals.They breed oviposition covered leathery shell, but there are viviparous and ovoviviparous species.Fertilization snakes inside, takes place inside the body of the female.
Genitals snakes, testes in males and ovaries in females, are in the body cavity in the rear on each side of the spine and open channels into the cloaca.The breeding season begins in the spring, when the reptiles are awake.
aggressive male pursues the female, grabs her teeth for neck or back, entwined around her body, and mates with her.By the end of the breeding season the female body can be covered with numerous scratches and b
process of mating snakes tend to group.The female selects the call of the secret, the smell of which run together all males from the inner circle, and around the female form tangles with a large number of individuals.However, the only one who manages to fertilize snake, usually "seals" special composition cork cloaca of the female, so that no one else will not be able to fertilize it during this season.
eggs laid by the female, contain large amounts of yolk, and are protected from external damage leathery shell.Many species of snakes eggs remain in the extended portion of the oviduct to the hatching of their young.Such snakes called ovoviviparous, they include boas and some members of the Vipers.
garter snakes, most of the sea snakes and vipers - viviparous: they are in the embryonic stage eat egg yolk, but the breath of the fruit they have done through communication with the metabolism of the parent body.The network of blood vessels entangles the oviduct the egg shell and the inside is leaking oxygen from the mother's blood.