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Jane Lefler
Jane Lefler, Breeder,Behaviorist, formerVet Asst
Category: Dog
Satisfied Customers: 16410
Experience:  Former vol Vet Assistant.Breeder 16+ years Dog trainer / behaviorist
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I need a chart on the growth of puppies in the womb. I ...

Customer Question

I need a chart on the growth of puppies in the womb. I would like to know the devlopment of the puppies at this stage. Thanks
Submitted: 7 years ago.
Category: Dog
Expert:  Jane Lefler replied 7 years ago.
Hi Ekim,

I think this is what you are referring to.

The first week of pregnancy
Fertilization occurs and the embryos are in the oviduct.

During the second week
The embryo will grow from a 4 cells to 64 cells and it will enter the uterus.

Third week
The embryos implant in the uterus.

Fourth week
The embryo develop eyes and spinal cords and their faces take shape. They are most susceptible to defects at this stage. It may be possible to feel for puppies at this point.

fifth week
Puppies develop toes, claws and look like dogs now. Their gender can be determined and their eyes are closed. They are now pretty resistant to developmental problems at this stage.

sixth week
During this week the pups develop skin pigment. they weigh around 6 grams. Fetal heartbeats can be heard with stethoscope by a trained individual.

seventh week
Pups continue to grow and mom's abdomen hair starts shedding.

eighth week
You can now feel the puppies moving around inside mom when she is at rest. The puppies can be born safely now.

ninth week
Puppies continue to grow.

An excellent site on this is:

http://www.k9web.com/dog-faqs/medical/whelping.html

Hope this was what you were looking for.

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