⚠️ Ovulation “Detectors” – A Quick Educational Note

I’m seeing more of these “automatic ovulation detectors” being advertised for dogs, so I want to clear up some confusion before anyone wastes money or misses a mating.

These handheld probes do not detect ovulation.

Ovulation in the bitch is driven by hormonal changes (progesterone rise). It cannot be accurately identified by measuring vaginal moisture, conductivity, resistance, or “numbers on a screen”. Those values can change for many reasons — discharge, irritation, probe placement, infection, stress — none of which tell you when ovulation has occurred.

At best, these devices may show general changes during the season. They cannot pinpoint fertile timing and they cannot replace progesterone testing. Relying on them often leads to:

• missed fertile days

• poorly timed matings

• false reassurance

• repeat seasons and frustration

Best practice for timing mating remains:

✔ Progesterone blood testing

✔ Cytology (when done correctly and interpreted properly)

✔ Understanding normal hormonal progression

✔ Experience and pattern tracking

There is no scientific validation supporting these devices for accurate ovulation timing in dogs.

If something promises an easy shortcut for canine fertility, be cautious — biology doesn’t work like that.

Education and evidence will always outperform gadgets.

Book into our Canine Cytology course and learn the biological way to pin point ovulation

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