How to Prepare Your Female Dog for Mating: The Complete Pre-Breeding Checklist

Preparation before the mating is as important as the mating itself. Here is everything to do before you book the stud.

Most breeding advice focuses on finding the right stud. Less attention is paid to the dam — but the female's pre-breeding preparation directly affects conception rates, litter size, puppy health, and her wellbeing throughout pregnancy and whelping.

This checklist covers everything you should do before breeding your female, ideally beginning 2-3 months before the planned mating.

8-12 Weeks Before Breeding

Complete Her Health Testing

Before any breeding should go ahead, confirm that your dam meets the health testing requirements for her breed. This means:

• OFA hip and elbow evaluations (if breed-appropriate — must be done at 24+ months)
• DNA tests for breed-specific genetic conditions (results are valid indefinitely)
• CAER eye examination (must be current — annual)
• Cardiac evaluation (annually or as breed club recommends)

If she is not health-tested and cleared, she should not be bred.

Brucellosis Test

Test your dam for Brucella canis within 4 weeks of the planned mating. Most stud owners require this and will rightly refuse the breeding without it.

Full Veterinary Wellness Examination

Book a general health exam. Your vet should:

• Confirm the dog is at a healthy body weight
• Check for any signs of vaginal infection or discharge
• Palpate the abdomen for any abnormalities
• Review vaccination status
• Run a complete blood panel if she is 5 years or older

Review Vaccination Status

Your dam's core vaccines should be up to date before breeding — ideally a month or more before, to give her body time to mount a full immune response. Puppies receive maternal antibodies through colostrum in the first 24-48 hours of life. A dam with high antibody titres provides stronger passive immunity to her litter.

Do not vaccinate during pregnancy. If her vaccines are not current, boost them before breeding.

Parasite Control

• Intestinal worms: Treat with a safe, broad-spectrum dewormer
• Heartworm test and prevention: Confirm negative and maintain prevention
• Flea and tick prevention: Use a product that is safe for breeding females — confirm with your vet

4-6 Weeks Before Breeding

Transition to a Quality Diet

Some breeders transition to a puppy or "all life stages" food several weeks before breeding to boost caloric density and folic acid content. Folic acid (vitamin B9) is associated with reduced neural tube defect risk in puppies.

Confirm She Is at Ideal Body Condition

Body condition score (BCS) should be 4-5 out of 9 (slightly lean to ideal). A dam that is carrying excess weight has reduced conception rates, increased risk of whelping complications, more difficulty nursing, and greater surgical risk if a c-section is needed.

Confirm the Stud Booking and Paperwork

• Confirm the stud, dates, and method (natural mating or AI)
• Sign the stud contract and keep a copy
• Confirm the stud's brucellosis test and health certificates are current
• Make travel arrangements if you are visiting the stud

At the Start of Her Heat Cycle

Use Progesterone Testing to Time the Mating

Do not rely on calendar days. Heat cycles vary significantly between individual females. The correct breeding window is defined by the dam's ovulation, not by day 12 or 14 of her heat.

Vaginal cytology shows the stage of the cycle by the type and proportion of cells present. When at least 80% cornified (anuclear) cells are visible, the female is near or at peak estrus.

Progesterone testing is the most precise method. Ovulation occurs when progesterone reaches approximately 5 ng/mL. The ideal breeding window is 2-4 days after confirmed ovulation.

Using both together gives the most complete picture. Ask your veterinarian for serial progesterone testing starting around day 7-8 of the heat cycle.

Day of the Mating

• Withhold food for a few hours before transport to reduce the risk of motion sickness
• Keep the female calm and low-stress
• Allow the dogs time to meet and interact before the mating — a forced immediate tie is more stressful for both dogs and less likely to succeed
• Have an experienced person present to assist if needed for natural mating

After the Mating

• Note the date(s) of mating and the method used
• Keep the female calm and limit strenuous exercise for 24-48 hours
• Schedule an ultrasound for day 25-28 to confirm pregnancy early
• Monitor for the subtle early signs of pregnancy: slight behavior change, mild appetite decrease in weeks 3-4, and nipple enlargement by weeks 4-5

Summary

The dam's preparation before breeding affects everything that follows — conception rate, litter size, puppy health at birth, and her own wellbeing through pregnancy and whelping. Start health testing and veterinary checks months in advance, use progesterone testing to time the breeding accurately, and arrive at mating day with a healthy, vaccinated, parasite-free female at ideal body weight.