How Do I Know If My Dachshund Is In Heat?

If your female Dachshund is not spayed, she will go into heat as part of her normal reproductive cycle. Heat, also called estrus, comes with clear physical and behavioral changes. Most owners notice the signs without special tests, especially during the first week. Knowing what is normal helps you keep her comfortable and avoid accidental pregnancy.

When Dachshunds usually go into heat

Most Dachshunds have their first heat between about 6 and 12 months of age, though some start a little earlier or later. After that, many cycles occur about twice a year. Small breeds can be a bit irregular at first, so the first couple of heats may not follow a perfect schedule.

Early physical signs

The first stage is called proestrus. This is when you will see the most obvious physical clues.

• Swollen vulva – the vulva looks larger and puffier than usual. In many dogs, it becomes clearly noticeable within a day or two.
• Bloody or pink discharge – you may see spots on bedding or the floor, or notice blood when she sits. Discharge is often heavier in week one and then lightens.
• More licking of the area – she may groom herself more to stay clean.
• Frequent urination – some Dachshunds pee small amounts more often to spread scent signals.

Behavior changes you might notice

Dachshunds can act a little differently during heat, even if they are normally steady dogs.

• Clinginess or extra affection – she may follow you more or seek more lap time.
• Restlessness – pacing, whining, or difficulty settling can happen.
• Tail tucking at first – early on, she often keeps her tail close and may sit differently.
• Attracting male dogs – males may suddenly show a strong interest, even from a distance.

How the heat cycle progresses

A full Dachshund heat cycle usually lasts around 3 to 4 weeks. It is often easiest to think of it in three practical parts.

Week 1 – going into heat

• Vulva swelling begins.
• Bloody discharge is most visible.
• She is not ready to mate yet and may snap or move away from males.

Week 2 – fertile window

• Discharge often turns lighter, pink, or straw colored.
• She may “flag” her tail to the side when touched near the back end.
• She may stand still for a male, which means pregnancy is possible.

Week 3 and beyond – coming out of heat

• Swelling reduces.
• Discharge fades and stops.
• Behavior returns to normal.

Ways to confirm heat at home

• Track the first day you see blood – that is day one.
• Watch for the discharge color shift and tail flagging around days 7 to 14.
• Note male dog attention – sudden, strong interest is a reliable clue.

What to do while she is in heat

• Keep her supervised outside – even calm dogs may try to roam.
• Leash walks only – avoid dog parks or off-leash areas.
• Use dog heat diapers if bleeding is messy indoors.
• Give extra calm time – short sniff walks and gentle play help restlessness.

When signs are not normal

Call your vet if you notice…

• Very heavy bleeding that soaks through diapers fast.
• Heat signs lasting longer than about 4 weeks.
• Foul-smelling discharge, fever, or lethargy.
• Sudden heat-like symptoms in an older dog who has not cycled in a long time.

You will know your Dachshund is in heat when you see a swollen vulva, bloody discharge, extra licking, and behavior shifts like clinginess or restlessness. The fertile period usually arrives in the second week, when discharge lightens, and she may flag her tail. Track the cycle, keep her safely supervised, and talk to your vet if anything seems extreme or lasts too long.