Conception
Day 1 – two cells
Day 1.5 – 8 cells – Morula Stage
Day 3-4 – Enters Uterus
Day 6-7 Blastula Stage
Embryo
Day 12 – Attaches to the wall of the Uterus
Day 20 – Heart begins to beat
Day 28-35 – Limb buds become visible
Day 35-42 – Differentiation of mouth, digits and dew claws
Fetus
Day 42 – The Fetus is now 37.5 mm (1.5 inches) long. The major tissue, organ and systems are defined.
Day 42-49 – Mammary buds or empty scrotal sac appear
Day 49-56 – Ear canal opens
Day 56-63 – Nostrils open
Day 60 – Fetus is now approximately 100mm (4 inches) long. They eyes, eyelids and nostrils are identifiable
Day 77-84 – Fetus is now approximately 250 mm (10 inches) long. After this point, fetal size is varies greatly, some breeds get much larger than others.
Day 98-105 – The first teeth erupt and hair grows around the eyes and muzzle.
Day 119 – 126 – Hair covers the entire body
Day 141 – the fetus is viable
Parturition/Kidding
Day 145 to 152 – your kid is born!
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