Pet Tips

Tip 57 – Dog in heat – signs your dog is in heat – the Estrous cycle

Once a female dog reaches puberty it begins its regular cycles of Estrus or heat which allow the dog to release eggs and reproduce. Most females have 2 cycles per year. Signs that your dog is in heat include include vaginal discharge which is clear, bleeding and swelling of the vulva. There is increased restlessness and there may be increased urination. You also may notice stray dogs hanging around your house, though the female will not accept mating at this point. This early period of heat called Proestrus, lasts between 4 -15 days depending on the size and breed of the dog along with other factors.

The next stage in the estrous cycle is the actual Estrus/heat where the dog will accept a mate and can get pregnant. Unless you are a professional dog breeder you should spay the dog before before her first heat. Some vets will spay a dog during its first heat. This Estrus lasts between 4 – 8 days and signs include the discharge stopping, ovulation (the eggs are released) and pregnancy is possible. If the dog becomes pregnant the gestation time is 58-63 days. There are no visible signs until the last 3 weeks of pregnancy when the teats will enlarge, the belly will swell and finally the birth will occur.

The 3rd stage of the cycle is called Diestrus and lasts 6 – 10 weeks. Many hormonal changes take place and the uterine walls thicken. Dogs that haven’t become pregnant go through ‘false pregnancy’ where their mammary glands may enlarge and produce milk. They may mother toys, moan or whine, prefer extra attention or extra solitude and will show no interest in mating. The last stage in the cycle is Anestrus and will last for 15 weeks. There won’t be any hormonal activity, milk production, or interest in mating. If the dog had become pregnant the birth would have already occurred and the mother will be lactating and engaging in typical mothering behaviour until she is ready to wean her puppies.

13 Responses to this Article, So Far

  1. Avatar kathy says:

    i have a dog in heat and want to know if i can take her for her walks like we do everyday when shes not in heat.and still protect her from getting pregnant.she still wants to go for walks.how do i still give her some excisce.hope i spelled that right.i want to take her for her walks.can i do that
    my dog is a little girl
    thank you
    kathy

    • Avatar Marko says:

      Unless you are a professional breeder, imo, you should spay your dog. Accidents happen all the time…..

      In terms of walking though, so long as you are 100% sure that you can keep your dog ON-LEASH 100% of the time, then i do not see a problem.

  2. Avatar Sue says:

    Is it ok to bring a dog in heat (or about to be) to a groomer? I have a toy poodle who I bring to the groomer to get her nails clipped. I do them myself every now and then.

  3. Avatar Tom says:

    I have a female boxer mix approx 1 year old that we rescued from the pound a couple of weeks ago. Yesterday she started trying to hump my leg while was sitting in a chair. I know thats a trait for a horny male dog but is it normal for a female.

    • Avatar Marko says:

      It is also normal for some spayed female cats as well, though it does tend to occur more frequently in males as far as I know.
      Often it has zero to do with “horniness”, it’s just a way some cats show affection. Your vet should be able to confirm this.
      Good luck.

  4. Avatar penny blair says:

    Hi,i have a 7mth old shitz x pom she is the runt of the litter i was wondering if shes in heat she swaying here butt and shes acting fistey and she supposed to go in get fixed sunday.no blood etc… i hope u can answer me let me know if its ok to still take her to get fixed?

    Thank you
    Penny Blair.

    • Avatar Marko says:

      I believe that you can spay a dog in heat but some vets choose to wait until the heat is over. Since you already have an appointment, why not just call your vet and ask.
      Obviously keep the dog away from all other intact males during the heat.
      Good luck.

  5. Avatar eric says:

    My yellow lab is 1year and 4mos and im not sure if she is on her second heat but her vagina seems like its larger than usual but i havent observed any blood..is she in heat?or is this normal or anything?any advice?i would be grateful :)

  6. Avatar April says:

    a dog wandered up to my house. im pretty sure shes a pit bull. her tits are kinda swollen looking and im sure they contain milk, but they dont leak. she dont leave no matter how long shes outside so i dont think she has puppies n e where. her stomach isnt very flabby but kinda firm. she has had sum reddish discharge. could she be pregnant?

  7. Avatar LeeAnne Nelson says:

    I have a 10 month old boxer shepard mix and i have not a clue if she has already gone into heat i havent seen any of the signs except using the bathroom alot. But today she got out of the yard with one of our males that isnt fixed and they were gone for about an hr and a half. What do you think can i use a human test on her??? I only ask cuz ive been told u can but that i would need to wait another couple of weeks to find out? Is this true

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