Name: Brenda C.
One of my students asked me how snakes have babies-Not
the laying the egg part but just exactly where do they come out?
Snakes have an opening called a cloaca. This is used to excrete waste,
for mating and also the eggs or baby snakes come out through this
opening. You can see the cloaca on the under side of the snake about
2/3 to 3/4 of the way from the head to the tail.
Laura Hungerford, DVM, MPH, PhD
i understand that your student wants to know from
where the snake egg emerges...You must remember
him that even most snakes lay eggs (oviparous)
some of them deliver a baby, outside the eggshell
ready to live (viviparous).
The reproductive system of the reptiles including the
snakes are simpler than the one of the mamals and
resembles the birds .
There are both in males and females an opening to
the exterior called "cloaca". The cloaca is the
passage from a internal chamber into which the
digestive, urinary and reproductive systems empty.
So both the baby snake or the non-hatched egg go
to the exterior through the cloaca.
Incidentaly, inside the female snake body there is
a tract called oviduct provided with conditions for
egg fertilization and embryo formation.
Hope this answer your question and thanks for asking
(Dr. Mabel Rodrigues)
Internal chamber into which the digestive, urinary and
reproductive systems empty, opening to the outside
through the anus.
Both eggs of egg laying snakes and the young of live bearers come out through the cloaca, a sort of
"general purpose" opening at the base of the tail.
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Update: June 2012