Cat Pregnancy Calculator
Created by: Liam Turner
Last updated:
Estimate feline gestation milestones including expected due date, ultrasound timing, and late-pregnancy planning windows.
Cat Pregnancy Calculator
CatEstimate due date and queening timeline milestones
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What is a Cat Pregnancy Calculator?
A Cat Pregnancy Calculator estimates expected queening date and key milestone dates from breeding date and gestation-length assumptions.
Formula
Estimated Due Date = Breeding Date + Gestation Days Key Milestones = Breeding Date + Milestone Offsets
Example
If breeding date is February 1 and gestation is 64 days, estimated due date is early April with ultrasound around day 24 and X-ray around day 45.
Common Applications
- Queening date planning
- Veterinary milestone scheduling
- Maternal nutrition timing
- Nesting area preparation
Tips
- Track appetite and behavior in final week.
- Prepare emergency contacts in advance.
- Use veterinary oversight for first-time litters.
Frequently Asked Questions
How long is cat pregnancy typically?
Feline gestation is commonly around 63 to 65 days, though practical due-date windows can vary by several days based on breeding timing and individual factors.
When should ultrasound be done?
Ultrasound is often useful around day 20-25 to confirm pregnancy and fetal viability. Your veterinarian can advise the best timing based on history and exam findings.
When is radiography useful?
Abdominal radiography is commonly used in late gestation, around day 45 or later, to estimate litter size and support queening preparedness.
How do calorie needs change during pregnancy?
Early pregnancy (weeks 1-3) requires no calorie increase. Starting week 4, gradually increase calories by about 25% to support fetal growth. During lactation, energy needs increase dramatically to 2-3x baseline for milk production. Many breeders switch to kitten food during late pregnancy and nursing due to its higher calorie density.
What are lactation energy requirements?
Nursing queens require 2-3 times their normal calorie intake, depending on litter size. Larger litters demand more energy for milk production. Provide small, frequent meals and unlimited access to fresh water. Weight loss during lactation is normal but should be monitored to prevent excessive depletion.
Can this calculator predict exact queening date?
It provides an estimate, not a guarantee. Actual delivery may vary. Monitor behavior and health closely and maintain veterinary support near expected delivery.
What should I prepare before due date?
Prepare a clean nesting area, emergency contacts, maternal nutrition plan, and neonatal monitoring supplies. Review warning signs and intervention thresholds with your veterinarian in advance.
Sources and References
- Merck Veterinary Manual: feline reproduction and gestation.
- AAFP and veterinary breeding resources.
- WSAVA maternal and neonatal care references.