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If you’re wondering when your female Golden Retriever will go into her first heat, it usually happens between 10-14 months of age. This timing can vary depending on her size and exposure to other dogs in heat.
While the first heat may be irregular with light bleeding, it will typically become more regular in future cycles.
Knowing the signs and stages of her heat cycle is important for managing her health and preventing an accidental pregnancy, especially since breeding during her first heat is not recommended.
Keep reading to learn more about what to expect and how to navigate your Golden Retriever’s first heat cycle.
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Signs Your Female Golden Retriever Is Going Into Heat
During your Golden’s first heat, you’ll notice both physical and behavioural changes. Watch for the following signs to understand where she is in her heat cycle:
- Swollen Vulva: This is one of the first signs of heat, though it may not be immediately noticeable. The vulva will swell to about 3-4 times its normal size a day or two before bleeding begins.
- Bleeding or Discharge: Bleeding is often the first visible sign. The discharge can vary in colour, including bloody, brown, clear, or yellow.
- Increased Mounting Behavior: You may notice your female mounting objects, toys, or other dogs, this is a hormonal response. She might even tolerate other dogs mounting her.
- Excessive Licking: Your Golden may lick her genitals more often to clean discharge or due to irritation from the swollen vulva.
- Behavioural Changes: Hormones can make your dog more affectionate, moody, or irritable. Some dogs may also experience changes in appetite or become more aggressive toward other females.
- Increased Urination: Expect more bathroom breaks as your dog marks her territory, signalling to male dogs that she is in heat.
- Nesting Behaviour: Your Golden may dig or move her bed and toys to create a “nest.” She’s preparing a comfortable spot as if she’s expecting puppies.
- Flagging: Flagging is when your Golden raises her tail to the side to signal she’s open to mating. She may also move her tail to spread her scent.
The 4 Stages Of Your Golden Retriever’s Heat Cycle
The heat cycle in Golden Retrievers has four stages. Each stage has its own signs and behaviours, and knowing what to expect can help you manage the process.
Stage 1: Proestrus (7-10 days)
This is the start of your Golden’s heat cycle, and typically lasts 7-10 days but can vary between 4-20 days. Your female won’t be receptive to males yet, but she’ll start attracting them with her scent.
Signs to look for:
- Swollen vulva
- Bleeding starts
- Changes in appetite & mood
- Fends off male dogs
Stage 2: Estrus (4-24 days)
Estrus is the main stage of your Golden’s heat cycle. It can last from 4-24 days, with an average of 9 days.
During this time your female is ovulating and fertile and is willing to accept male advances. This is the time you need to really be careful and keep your female away from male dogs.
Signs to look for:
- Lighter bleeding or discharge
- Increased urination
- Tail flagging to attract males
- Some females may attempt to find a mate
Stage 3: Diestrus (60-90 days)
During the third stage, your Golden is no longer fertile, and you can breathe a sigh of relief!
This stage usually begins around 24 days after the start of your Golden’s heat, and will typically last from 60-90 days.
Your Golden will still be emitting pheromones, so you need to keep her away from male dogs until her bleeding stops.
Signs to look for:
- No longer fertile
- Still emitting pheromones
- Personality returning to normal
- Fends off male dogs
- Bleeding changes from pink to red and eventually stops
Stage 4: Anestrus (60-150 days)
This is the resting phase between heat cycles. Your Golden will show no signs of being in heat and will behave normally during this time.
It can last anywhere from 60 to 150 days, with longer durations common in larger breeds like Golden Retrievers.
Signs to look for:
- Your female is infertile
- No discharge
- The vulva returns to normal
- Normal behaviour resumes
What To Expect During Your Golden Retriever’s First Heat
Feeling anxious about your Golden’s first heat is normal, but it’s usually not as bad as it sounds.
Some dogs bleed heavily, but many only experience light bleeding, especially during their first cycle. Goldens generally keep themselves clean, so you may barely notice the bleeding.
The first heat can be irregular as your dog is going through puberty, and it might take up to two years for regular cycles to develop.
Here are two common occurrences during the first heat:
- Silent Heat: Few noticeable signs like bleeding or swelling, but your dog is still ovulating.
- Split Heat: The heat cycle starts, pauses, and resumes a few weeks later. This is common in younger dogs and will regulate with maturity.
It’s important to know these things are normal, and with time, your Golden’s heat cycle will become more predictable.
Caring For Your Golden Retriever During Her First Heat
When your Golden is in heat, she’ll need extra care and supervision to stay happy and safe.
This short video explains how to keep your female comfortable during her heat cycle. Although the video shows a Cavalier dog, the tips apply to Golden Retrievers too.
Additional Tips:
- Avoid Public Places: Male dogs can be persistent. Keep your Golden away from public areas until her heat cycle ends.
- Use Doggie Diapers: Doggie diapers prevent mess and deter male dogs. If diapers don’t stay on, try a surgical suit.
- Ensure Proper Nutrition: Her appetite might decrease, so monitor her eating and drinking to keep her healthy.
- Be Attentive to Her Needs: She may become clingier and need more affection. Be mindful of her mood and comfort her.
- Exercise Indoors or Supervised: Don’t leave her unsupervised, even in a fenced yard. Play with her indoors until the heat cycle is over.
- Avoid Breeding on the First Heat: Responsible breeders wait until the third heat (around 18–24 months) to give the dog time to mature and complete important health tests. The Kennel Club notes that allowing a few heat cycles helps identify potential health issues and ensures the dog is ready for breeding