When the vulva on your bitch starts to enlarge, you may take a white paper towel and blot her vulva to see if any blood is
showing.  Some bitches keep themselves very clean and you might miss it, otherwise.  From the day you find blood count nine
days.  This is when we start breeding our bitches every forty eight hours through the fourteenth day.  This enhances the chances of
her eggs being fertilized.  During this time the spermatozoa (sperm) migrate up the cervix searching for mature eggs.  When they
reach the eggs in the oviducts they penetrate the eggs thus fertilizing them.  After this occurs the eggs migrate down from the
oviducts into the uterine horns (the uterus in dogs is divided into two areas similar to two sausage casing coming together in one
common areas).   They continue to migrate through the uterine horns until they are spaced evenly.  This allows room for the
embryos that are soon to form to have room to grow.  During all of this the fertilized eggs will grow into blastocysts (a thin-walled
structure that contains a cluster of cells from which the embryo developes).  The blastocysts implant in the walls of the uterine
horns (sometimes one will preside within in the body of the uterus where the two horns come together into one common area)
where they develop into embryos.  During the next two weeks (14 days) the puppy’s organs will develop.  Your Dams nipples will
begin to become pink and enlarge at this time.  The fur on her belly and around her nipples will become thinner.  Morning sickness
may or may not occur due to hormonal changes and stretching and distension of the uterus.  She may appear apathetic during this
time.  She may not want to eat as much and vomit from time to time.  This is the time that a trained hand should be able to
palpitate the dam to determine, if she is truly pregnant.    By this time the puppies are almost fully developed and her abdomen is
starting to get larger.  She will begin to spend a lot more time in self grooming.  Her breasts are becoming even more swollen.  She
may be a bit restless and begin to search for a place to have her puppies.  She may lose her appetite.  You will be able to feel the
puppies moving around inside her abdomen at this time.  You might take the time at this time to cut the hair around her nipples to
make it easier for the future puppies to suckle.  You should clean around the nipples and vulva area at this time.  Twenty four
hours prior to to delivery of the puppies her temperature should drop from approximately 101 to 98 something.  Most puppies are
born between the 59th and 65th day from the date of fertilization of the eggs.


The female reproductive tract
The reproductive tract of the female dog begins with the ovaries where the ova (or eggs) are produced. When a female puppy is
born, every egg that will be released by her ovaries over her lifetime are already present.  However, the eggs are in an immature
form and require further development to reach a stage that can be fertilized by sperm. When a dog's heat cycle starts, hormones
stimulate the maturation of some of the ova or eggs. The ova are then released through the surface of the ovary and pass into the
oviducts. These are tiny tubes that run between the ovaries and the horns of the uterus. It is within the oviducts that fertilization
(the union of the sperm cell and ovum) occurs. The horns are the muscular section of the uterus between the oviducts and the body
of the uterus. The uterine horns of dogs can vary greatly in length and diameter. In the typical 40-pound dog, they are normally
about four inches long and the diameter of a wooden pencil. When the animal is in heat, their thickness will easily double and they
may lengthen slightly. During pregnancy, they will vary from 2.5 to 6 inches in diameter and up to 24 inches in length. The horns
attach to the body of the uterus, a short common area where the horns meet. The uterus ends at the cervix of the dog. During
pregnancy, most puppies develop within the uterine horns, but one may reside within the body of the uterus.
Birth---
REPRODUCTION IN DOGS
FEMAL REPRODUCTION
IN THE DOG
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WARNING:  This web site is protected by Federal Copyright laws.  Unauthorized reproduction or distribution of pictures, or any portion of it, may result
in severe civil and criminal penalties, and will be prosecuted to the maximum extent possible under the law.
WARNING:  This web site is protected by Federal Copyright laws.  Unauthorized reproduction or distribution of pictures, or any
portion of it, may result in severe civil and criminal penalties, and will be prosecuted to the maximum extent possible under the law.
WARNING:  This web site is protected by Federal Copyright laws.  Unauthorized reproduction or distribution of pictures, or any
portion of it, may result in severe civil and criminal penalties, and will be prosecuted to the maximum extent possible under the law.
One horn at a time empties of it's puppies at a
time. Ocassionally a puppy will be inside the
uterine body.
THIS PAGE IS IN THE PROCESS
OF DEVELOPMENT.  WE ARE
TRYING TO ANSWER THE
MOST COMMON QUESTIONS
ABOUT THIS SUBJECT.