Dog Gestation Calculator & Other Animal Due Dates
Calculate estimated delivery date, delivery window, and key pregnancy milestones for dogs, cats, horses, cattle, goats, sheep, pigs, and rabbits.
Average gestation period: 63 days (Range: 58–68 days)
Date of successful mating or artificial insemination
Days Elapsed
0 days
Days Remaining
63 days
Current Status
🌱 In Gestation
Key Gestational Milestones & Veterinary Checkpoints
Ultrasound Check (Day 22-28)
~Sat, Oct 31, 2026 (Day 22)Fetal heartbeats detectable by veterinary ultrasound.
Abdominal Palpation (Day 30-35)
~Tue, Nov 10, 2026 (Day 32)Veterinarian can gently palpate individual amniotic sacs.
Fetal Skeletal X-Ray (Day 45-50)
~Wed, Nov 25, 2026 (Day 47)Bones calcify; X-rays accurately count puppy litter size.
Nesting & Temp Drop (Day 60-62)
~Tue, Dec 8, 2026 (Day 60)Rectal temp drops below 99°F (37.2°C) 12-24h before labor starts.
Veterinary Informational Disclaimer: Gestation periods naturally vary based on animal breed, age, health, litter size, and parity. Always consult a licensed veterinarian or qualified reproductive specialist for ultrasound confirmations, prenatal care, nutrition adjustments, and dystocia (difficult birth) monitoring.
What is Dog Gestation & Animal Pregnancy Calculator?
A dog pregnancy usually lasts about 63 days from ovulation, while a mating date can produce a wider estimate because conception may happen later. Enter the breeding date to estimate a dog due date, delivery window, elapsed days, and milestone timeline. Around week 3, implantation and early development occur; week 5 brings rapid fetal growth; by weeks 7–8, nesting and mammary changes may become more visible; and week 9 is the typical whelping window. Breed, litter size, ovulation timing, and health can shift the result, so use this for planning and confirm concerns with a veterinarian. Other pet and livestock species remain supported.
Use the estimate to plan care, then confirm pregnancy timing and health concerns with a veterinarian.
Dog pregnancy planning by week
The calculator adds 63 days to the entered dog mating date. This is a planning estimate, not a confirmed delivery date. Veterinary timing is more reliable when ovulation is known. Mating can happen days before conception, so the displayed delivery window cannot cover every pregnancy. Give your veterinarian the complete mating history.
Weeks 1-3: record mating dates and arrange a veterinary plan. A calculator cannot establish whether a dog is pregnant. Week 4: ultrasound after roughly day 28 is commonly used to confirm pregnancy, with timing chosen by the veterinarian. Weeks 5-6: discuss nutrition and activity as pregnancy progresses. Weeks 7-8: prepare a quiet whelping area and ask whether later imaging is appropriate. Week 9: keep veterinary contact details ready as the estimated delivery period approaches.
These are broad planning stages, not guaranteed fetal milestones or treatment instructions. Contact a veterinarian about illness, unusual discharge, distress, or difficult labor instead of waiting for the calculated date. Changing the species selector preserves the existing cat, horse, cattle, goat, sheep, pig, rabbit, and guinea-pig calculations. Your dates stay in your browser.
How to Use the Dog Gestation & Animal Pregnancy Calculator
- 1Select Dog or another supported species in the species selector.
- 2Enter the Mating / Breeding Date using the calendar field.
- 3Review the calculated expected delivery due date, minimum-to-maximum birth window, and elapsed gestation days.
- 4Read the Pregnancy Milestones timeline and veterinary disclaimer; confirm individual care decisions with a veterinarian.
Formula & Calculation Logic
Computes parturition dates and developmental trimesters based on species-specific biological gestation averages established in veterinary theriogenology.
Due_Date = Mating_Date + Species_Average_Days | Birth_Window = [Min_Days, Max_Days]Dog Gestation & Animal Pregnancy Calculator Frequently Asked Questions
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