week 1 - 4

Week One                                                                                                           

DEVELOPMENT OF THE PUPPIES

Fertilisation occurs
2 cell embryos are in the oviduct
The embryo is fairly resistant to external interference in development

CHANGES IN THE BITCH

possible morning sickness 

Possible personality changes

CARE OF THE BITCH

Normal feeding
No flea treatments
No jabs 

Week Two (Days 8-14)                                                           

DEVELOPMENT OF THE PUPPIES
Embryo will be 4 cell at start of week and 64 cell by end of week
Embryo enters the uterus

CHANGES IN THE BITCH

Possible morning sickness (can also come in week 5)

CARE OF THE BITCH
Continue as with Week One

Week Three (Days 15-21)                

          

DEVELOPMENT OF THE PUPPIES
 Implantation of embryos in uterus
The embryo is sensitive to external interference in development

CHANGES IN THE BITCH
See week 1 and 2 

CARE OF THE BITCH
See week 1 and 2

Week Four (Days 22-28)                                                  

DEVELOPMENT OF THE PUPPIES
+ Development of eyes and spinal cords
+ Faces take shape
+ Fetuses grow from 5-10 mm to 14-15 mm
+ Organogenesis begins– Embryos are at their most susceptible to defects
+ Days 26 – 32 are the best days to palpitate (i.e.. feel for the puppies)

CHANGES IN THE BITCH
+ Possible clear vaginal discharge
+ Mammary development begins

CARE OF THE BITCH
After Day 26, palpitation may be possible to diagnose pregnancy
Limit strenuous activity (such as working, jumping, long runs)
Add Omega 3+ oil or similar daily

TO DO LIST

Schedule a scan by the end of the week. 

Photos curtsy of National Geographic "Inside the womb" documentary