Dog Pregnancy Calculator

Phase	Time	Characteristics
Fertilization and Early Pregnancy		Mating and Fertilization: Successful mating leads to fertilization. Embryo Formation: Fertilized eggs form embryos and travel to the uterus.
Embryo Implantation		Implantation: Embryos implant in the uterine lining. Early Signs of Pregnancy: Slight behavioral changes might be noticeable.
Fetal Development		Veterinary Confirmation: A vet can confirm pregnancy through palpation or ultrasound. Visible Physical Changes: Enlargement and darkening of nipples; slight abdominal enlargement.
Rapid Growth Period		Ultrasound Viability: Heartbeats are detectable via ultrasound. Significant Physical Changes: Noticeable increase in the mother's abdominal size; increased appetite.
Preparation for Birth		Fetal Development Completion: Puppies develop most features by now. Nesting Behavior: The mother may start looking for a place to give birth.
Pre-Labor Stage		X-ray Viability: An X-ray can show the number of puppies. Physical Readiness: The mother's body prepares for labor; she may show signs of discomfort.
Final Week and Labor		Labor Signs: Restlessness, nesting, loss of appetite, temperature drop. Labor and Delivery: The onset of labor leading to the birth of puppies.
Post-Birth		Immediate Postpartum: Ensuring all puppies are nursing and the mother is caring for them. Veterinary Check-up: Post-birth check-up for mother and puppies.

Dog Pregnancy Reference Table

Below is a reference table showing the due date for all days of the year.