A Dog Breeding Planner That Handles More Than One Dam
Last Reviewed: June 19, 2026. Written and reviewed by the BreederHQ Operations Team, working with active dog breeders.
If you breed one dam, a calendar reminder works. If you breed two or more, you start losing track of which dam is due back into heat, when their windows might collide, and which weeks are actually open for a planned breeding. That is what a breeding planner is for.
Looking for the actual tool? The interactive planner lives one click away.
Open the Free Breeding Planner →What a Dog Breeding Planner Projects
Next Heat Date Per Dam
For each dam, the planner takes the last recorded heat date and projects the next one using either her recorded interval history (preferred) or the textbook six-month average (fallback for first-cycle or under-recorded dams). The output is a date range, not a single date, because that is what the underlying biology actually supports.
Estimated Breeding Window
Around day 10 to day 15 of each projected cycle. The planner shows this as a shaded band, not a single date, because actual ovulation is determined by the LH surge and only progesterone testing can pinpoint it. The band is when to start testing, not when to breed.
Estimated Whelping Window
Sixty-three days from the estimated ovulation date, with a buffer for ovulation-timing uncertainty. If breedings are confirmed by progesterone, the actual whelping date is far tighter. The planner shows the range; the breeder fills in the actual date once it is known.
Open Weeks Between Cycles
The space between the end of one whelping window and the start of the next breeding window for the same dam. This is the time available for go-home weeks, travel, shows, or simply program rest. Seeing this on a calendar instead of in your head is the whole point.
Overlapping Windows Across Dams
When you have multiple dams, two or more breeding windows can land on the same week. That can be exactly what you want (one stud trip, two breedings) or exactly what you do not want (two whelping windows the same week). The planner surfaces the overlaps so the decision is intentional.
What This Planner Cannot Do
Pinpoint Ovulation
The breeding window the planner shows is a textbook approximation. Real ovulation is determined by the LH surge. For natural cover with multiple ties, the approximation usually works. For chilled or frozen, you need progesterone testing.
Predict First Cycles
A dam with no recorded cycle history gets the textbook six-month interval. That is a starting guess, not a prediction. The planner becomes meaningfully accurate after two or three recorded cycles.
Manage Unlimited Dams
The free planner handles three dams in one view. That covers most small programs. Programs with four or more active dams need the full platform, where dams, cycles, breedings, and litters are tracked together and predictions improve with every recorded event.
Replace Progesterone Testing
No planner can. The planner tells you when to schedule the first P4 test. The vet tells you when to breed.