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Reproductive Health & Neutering

Recognising the signs

Notice changes without trying to diagnose a season from one sign.

An observation checklist

Look for vulval swelling, bloody or changing discharge, increased licking, more frequent urination, restlessness, altered sociability and unusual interest from male dogs. Note what changed and when. These observations are not a diagnostic test.

Subtle signs

Some dogs clean away discharge or show very little blood. No obvious bleeding does not exclude a season. Do not introduce a male dog to “test” her. Painful urination, bad-smelling discharge or feeling unwell may have another cause: contact the practice.

Observation checklist — not a diagnosis

Recognising the signs

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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.

Choose a short guide

Female dogs in season

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.

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