Understanding a dog’s season
Typical patterns vary between dogs. Averages are useful context, not a timetable for your dog.
Reproductive Health & Neutering
Female dogs in season
Understand the signs, keep your dog comfortable and prevent unplanned mating. Choose a short guide for the question you have today.
A reproductive cycle, not a human period
A season involves hormonal changes and a period when pregnancy is possible. Bleeding can occur, but dogs do not shed their womb lining in the same way as human menstruation. Visible blood does not identify the fertile days.
Choose a short guide
Recognising the signs
Notice changes without trying to diagnose a season from one sign.
Stages of the reproductive cycle
Four stages describe the cycle; they cannot be identified reliably from a calendar alone.
Pain, discomfort and behaviour
Significant pain is not something to dismiss as a normal season.
Supporting your dog at home
Keep care familiar, calm and responsive to your dog.
Walks, safety and preventing unplanned mating
Prevent access rather than trying to predict safe days.
When to contact your vet
Use the level of concern to act; this guide cannot rule out disease.
After the season
Visible signs settling does not end the need to watch your dog’s wellbeing.
Tracking your dog’s seasons
Keep observations to share with your vet, without calculating fertile days.
Do not predict fertile days
A tracker cannot determine fertility, establish a safe mating date or replace veterinary assessment. Do not use bleeding, its cessation or calendar estimates to decide that mating is safe.
Evidence and review
About this guidanceReview details and sources
Evidence and review
Evidence assessed 8 October 2026. General owner information, not diagnosis or individual treatment. Practical care suggestions are editorial guidance. Independent veterinary and native-language review has not been obtained. References do not imply endorsement. Existing linked pages retain their own evidence-review dates.