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If you’re a brand brand-new chihuahua pet parental (congratulations by the way!), you may have actually a most questions and uncertainties about how to best care for them. And also if you’re a pet parent to a mrs chihuahua, you have actually some unanswered questions around their warm cycle, like just how long that lasts.

You are watching: When do chihuahuas go into heat

So, how long do chihuahuas stay in heat? Heat cycles in dogs usually last in between 2-4 weeks and also a chihuahua’s warmth cycle will, top top average, last 3 weeks and happen about once every 6-9 months.

You can also expect her chihuahua’s heat cycle to begin between the periods of 6 months come a year. There are cases, however, that smaller and also miniature breed dogs having their first heat bike as early on as 4 months and as late together 18 months. If this is the case for your chihuahua climate don’t panic.

Don’t suppose your chihuahua’s warmth cycle to come to be regular ~ the an initial one, either. Part dogs can take approximately 18 months before their heat cycle becomes continuous after the very first one, chihuahua’s included. And also with small dogs favor chihuahuas, a consistent heat cycle can be as frequent as 3-4 months.

Best practice, as always, is to check any type of worries out through your vet, particularly if your chihuahua’s warm cycle is early, late, an extremely frequent or very irregular.


What walk it average When a Chihuahua is in Heat? 

Coming residence to a dog who is excited to watch you, even if all you did was go the end to the automobile to obtain something girlfriend forgot, deserve to have both its an excellent and poor sides.

Dealing v a dog in estrus or in heat have the right to be trying, or it deserve to be nothing much more than a nuisance.

What go it average when a chihuahua is in the heat? This is once she is fertile and also becomes interested in breeding. She will have a spike in the hormone estrogen, which will then drop as the mature egg drop into the uterus. That is only right now that puppies room possible. 

Knowing what estrus is may help you to recognize your chihuahua a bit better. Even if it is you want puppies or you desire to recognize so you can keep your intact chihuahua from having actually them, knowing how to recognize the estrus cycle can help in making these decisions. 

Being in heat method that your chihuahua is either ready to breed or getting ready to. Most chihuahuas will certainly be in warm for 3 weeks. As soon as your chihuahua is in the warmth for the very first time, this is a sign that she is sexually mature and capable of breeding.

Though if you do arrangement to breed her, this is no the optimal time to carry out it. 

Breeding at much less than 18 month of period can be really hard top top a dog and can even stunt her development as she is still a cultivation puppy.

A dog should NEVER it is in bred throughout her first heat, even accidentally.

Measures need to be taken to ensure that she is not bred, and also these are procedures that any type of responsible pet parental should have the ability to take. 

That gift said, gift in warmth is in reality just component of the estrus cycle the a mrs dog experiences many of she life. The roller coaster the is her hormone cycle will certainly rise and also fall simply as they do in human females, however on a longer scale.


What specifically is the Estrus or warm Cycle in Chihuahuas?

Basically, the warmth cycle is how the hormones rise and also fall in a chihuahua. In humans, this roller coaster runs it’s a loop around every 28 days, but with dogs, it can run all over from 3 – 6 months. Dogs, chihuahuas included, will typically have a heat two to 3 times a year. 

The entire heat cycle deserve to last indigenous 2-4 weeks, relying on the each other of your dog. Return the health and age of your dog can influence this together well.

Smaller breed dogs like chihuahuas will usually have actually heats an ext often while larger breeds may stick closer come the 6-month cycle. There room 4 step to the estrus cycle. I have provided them below with some information on what you have the right to expect throughout each stage. 


This is the beginning of the cycle. This is significant by a swollen vulva (female genitalia) and one of the 2 physical indications of the heat cycle. This is as soon as males will begin to show interest, as soon as her personality will start to readjust a bit, and also when she will start playing much more “sexual” games with others.

Mounting and also chasing behaviour will begin to become an ext pronounced.

Your dog will also have some slight bleeding from her genitalia. This might be compared to a duration in a human, however this is in reality the beginning, no the end of the cycle, unlike humans. This bleeding is the second physical sign of the estrous cycle and also will taper off about 5-7 days. 


Your dog will proceed to have actually a swollen vulva, and also the discharge will certainly be lighter, at some point becoming more clear although that is not urine. This is as soon as males could end up being aggressive to try to mate v her. Ns have also had a male dog shot to break into my house to gain to among my females in heat. 

Your woman will commonly be much more willing come “play” with unknown males and will be more likely come let a well-known male mountain her. However, if she absolutely hates a particular male, also though the hormone will push her breeding instinct, she might not let him mount her.

You may notice some changes in she personality in ~ this point as well, however this different on the personality of your dog.

This part of the warmth cycle will usually last about 5-7 days. Girlfriend will know if she is receptive come males through scratching above her tail. If she moves her tail to the side, she may be receptive come males. Do NOT let she go exterior unsupervised.

Untethered males will jump fences, dig under them, do anything they need to acquire at a receptive female, including attacking humans. 


This is the duration after her heat and also will critical the size of a common dog pregnancy (about 54-60 days). Even if it is she it s okay pregnant or not, this will still last about two months. Unlike through humans, pregnant does no interrupt the estrus cycle.

The discharge will certainly end, and the ede of she vulva will go back to normal. 

Your dog’s personality will go back to normal, and the males will certainly no much longer be hounding your dog.

Some dogs may experience a pseudopregnancy throughout this time. This is a false pregnancy, and also while that is not generally anything to worry about, if you space concerned, you deserve to see your vet around it.

She may have lactation and also my mommy any stuffed animals she has accessibility to. When this is not typical, the is normal. If your girl has packmates, she may safeguard her “puppies” native them i beg your pardon may result in some disagreements between them, particularly if one of the stuffed pets is a favourite of a packmate. 


This is usually a lack of hormone activity. Play will certainly go back to normal. Your dog will certainly no much longer be protecting she stuffed pets as the hormone responsible because that a pseudopregnancy room no longer existent. If she to be pregnant, she would certainly be caring because that puppies for about fifty percent of this time. This time deserve to last from about 30 to 90 days. 

Should You gain Your Chihuahua resolved to stop Heat

This is a an individual choice and also a decision that need to not be made easy one way or the other. There are both pros and also cons to acquiring a dog fixed. Getting a dog resolved will NOT protect against all reproductive cancer, also though numerous vets and even the ASPCA will state that does. 

According to a examine done by the college of California Davis, acquiring a dog fixed can potentially increase risks of part joint disorders and also other species of cancer than the ones the spaying may prevent. If the examine does specify the differences in between breeds and also the general dog populace differ, it does do one reconsider previous referrals made. 

One point I did find in every one of my research is the regardless if you setup to have actually your chihuahua fixed, waiting until after her very first heat is best. Solving a woman chihuahua prior to she is sexually mature can seriously rise bone problems as they obtain older. This is due to the hormones signalling bone development to slow or even stop never gets released. 

One the the other key things to take into consideration is the risks connected with spaying. Various other than the obvious slight threat of death, either from a doctor’s failure or more likely a reaction come the anesthesia., there is additionally a risk of incontinence together well. 

The advantages of spaying are likewise to it is in taken right into account. Few of which would be the adjustment drive would certainly no much longer exist, nor would certainly the danger of undesirable puppies. Because of the absolutely horrendous quantities of stray and also homeless dogs, obtaining a female fixed might be a an option that is best for your family, if you cannot care for a litter that puppies throughout your lifetime. 

Swollen Teats ~ Chihuahuas Has been in Heat?

Some pets parents come to be worried if your chihuahua’s nipples are still swollen after gift in heat. Return it’s an ext common because that a female’s dog nipples to not be swollen ~ their warm cycle, the can take place and, for the most part, that is naught to issue about.

One factor for nipple’s still gift swollen is due to “phantom pregnancy”. This means your dog is showing signs of gift pregnant, even though she is, in fact, not pregnant. A phantom pregnancy will certainly usually fix itself in ~ a couple of weeks ~ the warmth cycle has ended.

Final Thoughts

I hope this article has helped answer few of your questions and also or worries approximately your chihuahua’s warmth cycle. The fact that you’ve read this much shows you space committed come the wellness of your chihuahua.

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Doggies rely on their pet parents to look out for them. This deserve to be a large responsibility, especially for newer pet parents. I understand that countless of this pet parental will take to the internet and the all-powerful “Dr. Google” to uncover some answers. 

My hope through this post and also with this website is to assist pet parental navigate the murky waters the the internet in relationship to their dogs. As always, the finest practice is to consult through your vet to ensure skilled knowledge is offered for her chihuahua’s health and well-being.