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Male vs. Female Chihuahua: What’s the Difference (With Pictures)

Nicole Cosgrove Profile Picture

By Nicole Cosgrove

Male vs Female Chihuahua

If you have your heart set on a Chihuahua, there is no point in telling you how adorable they are or how they have many great characteristics. In fact, the reason you stopped at this article is probably because you were wrestling with the final decision of whether you should choose a male or female, right?

Unfortunately, that is not the easiest question to answer, and it will require more thought than just picking a gender out of a hat. Some marked differences between the two can affect which one will be right for you and your home.

To help you jump this last hurdle before Chi parenthood, we have shared the most important male and female factors below. Get ready to learn their personalities, traits, and other important details you should know before making a final decision.

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Common Personality Traits of Male And Female Chihuahuas

As we mentioned above, choosing between male and female is not easy. One of the main reasons for this is because there is no personality trait you can assign to either gender that will hold true 100 percent of the time. Each Chihuahua is an individual, and their personality is based on several different factors.

Below, we have outlined some marked consistencies within each gender to give you a general idea of how your pet may behave. This is by no means a concrete rule, however, as each of these characteristics can switch roles depending on the individual pup.

chihuahua sitting on a tree log outdoor
Photo Credit: liggraphy, Pixabay


For the most part, male Chis are more likely to challenge the authority of their owner. They will try to assert their dominance by growling, nipping, and barking if you try to touch their toys, treats, and food dishes. They will test the boundaries when you give commands by completely ignoring them, as well. This behavior can be worked out with training, though.

Females, on the other hand, are not as concerned with dominance when it comes to their owners. Interestingly enough, females tend to take an authoritative role when in the company of another male Chi.


When it comes to affection, the male wins the race. They tend to be more loving and in need of affection. Males are more apt to want extra pats, they will be more likely to follow you around the house, and they can be more jealous of other things that take away your time and attention.

Females, on the other hand, do not seem to need constant affection. While they are still loyal and happy to be in your company, they do not thrive on constant contact. A female will be able to sit across the room, or even in another part of the home, contentedly.

Chihuahua with slipper
Photo Credit: PickPik


Both males and females have a great deal of energy to burn. Since they are toy-sized, though, they will be able to burn the energy off more quickly than other breeds. What separates the two genders, in this case, is not overall energy but more on their ability to relax.

Females have a higher tolerance for sitting still for longer periods. They can relax on your lap without the need to fidget and move about. Males, on the other hand, seem to have ants in their pants. They have more trouble staying still and will not sit on your lap for long.

Aggression and Barking

Aggression and barking can afflict either gender depending on their personality, upbringing, and care. Many people believe that males are more aggressive in general, while females bark more consistently. On the other hand, you could ask a separate sub-set of people and get the opposite answer.

For the most part, males will be slightly more aggressive than females simply due to their hormones and natural male instincts. Conversely, females can opt to bark more because of mood swings and other annoyances that bother them. Also, keep in mind that you can have a manly Chi that barks his head off and runs at the first sign of trouble.

Overall, each Chihuahua is going to have a personality that is developed by several factors. If you decide on a male, there is no guarantee that he will be affectionate, stubborn, and aggressive with not too much to say.

To shed a little more light on how each personality is formed, we will share some background on how a Chi becomes an individual. First, though, we want to talk about one contributing factor that makes a big difference in your pup’s personality and is more standard for each gender. That factor is hormones, which we will talk about next.

Chihuahua running
Photo Credit: Pikrepo

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Spayed and Neutered

A very significant factor in the Chihuahua’s personality is whether or not they have been fixed. When the pooch is not spayed or neutered, their basic characteristics can be amplified, plus they can have several other quirks that are more consistent with the gender, like affection and barking.

With that being said, hormones that cause physical and behavioral changes are different for males and females. First, let’s look at the female side of things.

Non-Spayed Females

Chi girls that have not been spayed can have some “issues” that are harder to deal with than the average pooch problems. Not fixing your furball means she will continue to go through a “heat cycle” that can cause behavioral and physical changes. Here are some of the concerns you should consider if you are thinking about a non-spayed Chihuahua.

  • Shedding: When a female Chi is in her heat cycle, she will shed more than is typical. Also called blowing the coat, you will have more fur about the home with a non-spayed female. What’s more, if you choose to breed your pup or she gets pregnant, there will be an even heavier shed.
  • Blood: A Chihuahua will also have blood spotting during her heat cycle. The amount can vary depending on the female and the specific time of the cycle. You may not always notice it, either. You should also be aware that a small amount of blood will be released every time she urinates, and it will attract frisky males.
  • Staining: Besides blood, girls will also have discharge during heat. It can be light, but over time, it can build up on pet beds, furniture, etc. It is recommended that you wash any fabrics your pup uses often during this time, as well as using a dog diaper (yes, seriously).
  • Moodiness: Mood swings are another ailment of the heat cycle, although the severity can vary depending on the individual Chi, and the specific cycle time. Some moods can be worse than others, and it will fluctuate. As her hormones are rising and falling quickly, she may exhibit anxiousness, low tolerance for being touched, coolness, and can withdraw. Although it is nothing to worry about, it’s best to leave your pup in peace when her mood is particularly crabby.
  • Pain: Like humans, the female Chihuahua can experience some pain and cramping during this time. Again, this is normal and nothing to worry about, but you may hear some whimpering.
  • Other behaviors: A couple of other behaviors that are out of the ordinary are nesting, flagging, and making escape attempts. Nesting is her hormones way of getting ready for puppies. She may act more protective yet gentle towards toys (stuffed animals). Flagging, again brought on by hormones, is essentially flirting by being extra coy and raising her tail around a male. Finally, as nature is telling her to mate, she might try to escape to find a partner.

If you decide not to spay your Chi pup, be aware that her heat cycle can begin as early as 6 or 7 months old, and it will last throughout her entire life. Also, this more difficult time goes through four stages and only happens twice a year. That being said, it can last up to 6 weeks, where these behaviors can fluctuate greatly.

Male Chihuahua
Photo Credit: Pikrepo

Non-Neutered Males

Male Chihuahuas that are not fixed have their own set of behavioral and personality issues. Unlike females, a male does not experience a heat cycle, so these issues will be a normal part of their personality unless they are neutered. Here are some of the most common quarks:

  • Marking: A male Chi will feel the urge to mark his territory in your home and areas outside. He will do this by urinating a small amount on items around the space. This is especially true if you bring a new item, such as furniture, into the home.
  • Dominance: As we mentioned, Chihuahua boys can tend to test the boundaries with their owners. When they are not neutered, this behavior is exaggerated. They will guard their toys and ignore normal commands.
  • Humping: As a general rule, both male and female Chihuahuas will do this compromising little dance whether they are fixed or not. In the case of the male, however, the urge to do so will be more prominent. Interesting to note: it has nothing to do with mating.
  • Escapes: A male Chi that is not neutered is going to look for ways to mate. They can smell a female in heat from up to 3 miles away, and they will want to seek her out. That being said, you may not be able to see the reason why your pup suddenly gets anxious or wants to take off.

When you choose a male Chihuahua, know that they will begin this behavior as young as 7 months, or as soon as they hit puberty. It will also last throughout their entire lifespan.

Unless you are planning to breed your Chi, it is recommended to have them spayed or neutered as soon as possible. Accidental pregnancies can happen, which requires a large commitment on your part. Also, if you are not planning to allow your pet any “puppy-love,” some of these side effects can be uncomfortable for the dog.

Finally, Chihuahuas (and dogs in general) that are not fixed are at a higher risk for certain health risks, which brings us to our next topic.

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Possible Health Concerns for Males and Females

Both male and female Chihuahuas are equally at risk for basic health concerns. When they are not fixed, however, they are more likely to develop serious diseases. This time, we will start with the males. They are prone to developing the following:

  • Cryptorchidism: This is when a male’s testicles do not descend. When this occurs, the additional levels of testosterone can cause more aggressive behaviors, a higher risk of cancer, and a fatal condition called torsion.
  • Prostate Cancer: This is a common form of cancer in male dogs and will spread quickly to other parts of their body. Neutering your pup will reduce the likelihood of him developing this disease.
Siberian Husky
Photo Credit: otsphoto, Shutterstock

For non-spayed females, they can be at a higher risk for:

  • Mammary Cancer: If you choose not to spay your Chi girl, you should be aware that a quarter of females that are not fixed will develop this deadly disease.
  • Cysts and Tumors: Tumors and cysts on the ovaries can occur and cause your pooch considerable pain. That being said, it is not as common as other ailments.
  • Cramps: As we mentioned above, females can experience painful cramping during their heat cycle that would be obliterated if she is spayed.

Beyond these issues, both male and female Chihuahuas will experience some health issues in their lifetime, depending on the individual pooch. They should see a vet regularly for check-ups.

chihuahua dog wearing a reindeer hat
Photo Credit: HG-Fotografie, Pixabay

Contributing Factors to Personality

As promised, we wanted to go over some of the other factors that will contribute to your Chihuahua’s personality. These aspects of your dog will help shape their personalities and determine how they are going to behave.

  • Family: Just like humans, dogs can pass down traits to their children. For example, an overly aggressive male may produce an aggressive female. Keep in mind, though, it is not a sure thing, and a Chihuahua’s offspring can be the complete opposite.
  • Their Early Years: How a puppy is treated in their first several weeks of life can play a big role in their characteristics. Socializing, attention, and affection can make a difference in their overall adjustment.
  • Overall Care: Even after their early puppy days, how a Chi is treated and the care they are given will shape their temperament. This is especially true if you are adopting an adult. For example, if a female is mistreated, she may be more aggressive or have anxiety issues.
  • Health: If a pup is in pain or has other health issues, it can affect how they react to you and their environment. This is extra true for Chi’s that are not fixed.
  • Individuality: Just like us, a Chihuahua is going to be who they are going to be. There may not always be a rhyme or reason to their madness, but in the long run, any personality quirks are well worth the companionship of these cuties.
close up of chihuahua sitting outdoor
Photo Credit: Rebecca Scholz, Pixabay

Male vs. Female: The Showdown

Now that we have gone through a considerable amount of information, you may still not know which is the right gender for you and your home. That being said, there are one or two other factors you should consider.

First, if you do not wish to have your Chihuahua neutered or spayed, take a peek through the neighborhood to see what other dogs are around. If you have a male that is not fixed, living next door to a non-spayed female might get a bit hairy at times.

Even if you do plan to take care of that issue, you still want to see what other dogs are around your neighborhood. Males can often have more of a need for walks, so a dog park close by is helpful. On the other hand, females do better in apartments or smaller homes.

If you are bringing a Chihuahua into a home that already has a four-legged friend, you will want to observe how they behave towards other dogs of the same and opposite sex. Finally, consider your feelings. Which gender do you feel more comfortable with?

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Pros and Cons of Male vs. Female Chihuahuas

To make things simple, take a look at these pros and cons.


  • More tolerant of small living spaces
  • Does not test dominance as often
  • Is likely to run away
  • Is more apt to sit on your lap
  • Requires less constant attention
  • Can be moody and cool
  • Is more likely to be a barker
  • Effects of not being spayed
  • Not as affectionate
chihuahua licking
Image Credit: funkyteddy, Shutterstock


  • Can be affectionate
  • Not as likely to be a barker
  • Not as moody
  • Lots of energy
  • Less messy non-fixed problems
  • Can be more aggressive
  • More likely to test dominance
  • Needs more attention
  • More likely to escape

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We hope this article has given you the information you need to make the choice between a male and female Chihuahua. These cute and toy-sized pups are a great addition to most families and will be loyal, loving, and provide endless hours of laughter.

Remember, though, that each pup has its own personality. Of course, with the right love and care, even the most stubborn Chis can be trained out of a sour disposition.

See Also:

Featured Image Credit: (L) jutawat Rawichot, Shutterstock | (R) Sophon Nawit, Shutterstock

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