Tips & FactsTraining & Behavior

Why Is My Chihuahua Acting Weird

If you’re a Chihuahua owner, you might have noticed that your furry friend sometimes behaves in strange ways. It might seem like your Chihuahua is acting weird for no reason, but there could be an underlying cause for their unusual behavior. In this blog post, we’ll explore why your Chihuahua might be acting weird and what you can do to help them feel better.

Weird Behavior Symptoms of a Chihuahua

chihuahua acting weird

Chihuahuas are known for having big personalities, and they can sometimes act in strange ways to us humans. However, keep in mind that our dogs are individuals, and what appears strange to us may simply be your Chihuahua’s normal behavior.

Some common weird behavior symptoms that Chihuahuas might exhibit include:

🐕Reverse Sneeze

If you’ve seen your Chihuahua make a strange snorting noise and start gag, you’ve witnessed the “reverse sneeze.” This weird behavior is quite common in Chihuahuas, and it’s usually nothing to worry about. 

The reverse sneeze occurs when the soft palate in the back of the Chihuahua’s throat becomes irritated. It can happen for various reasons, including allergies, a foreign object in the nose, or excitement. While it may look and sound frightening, the reverse sneeze is not harmful and will usually go away on its own.


Have you ever seen a chihuahua pace back and forth? It’s actually a pretty typical behavior for this breed. While it may appear strange at first, there is a perfectly logical explanation. Chihuahuas are descendants of the ancient Techichi, a small dog used by the Aztecs as a companion and source of warmth. 

The Techichi possesses a rapid metabolic rate, and modern Chihuahuas have inherited this quality from their ancestor. As a result, these dogs are usually very active and need to burn off excess energy. That’s why pacing is a way for chihuahuas to release energy and stay calm. 

🐕Shivering or Tremors

Another strange behavior that is common in Chihuahuas is “shivering” or tremors. It can happen for several reasons, including excitement, fear, pain, and even cold weather. 

If your Chihuahua is shivering or trembling, it’s essential to pay attention to other signs and symptoms to see if there is a medical reason for the behavior. In most cases, shaking or trembling is normal and nothing to worry about.


If you’ve ever seen your Chihuahua suddenly take off running around the house or yard like a crazy person, you’ve witnessed the “zoomies.” Zoomies are a prevalent behavior in Chihuahuas (and other dogs), and they usually occur when the dog is excited or stressed.

While the zoomies may look cute, it’s vital to ensure that your Chihuahua has a safe place to run and play. Otherwise, the zoomies can lead to accidents and injuries.

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🐕Running in Circles

On any given day, you might see a chihuahua running in circles in its owner’s backyard. While this behavior may seem strange, there’s actually a reason behind it. For chihuahuas, running in circles helps them to release excess energy and stay fit.

These dogs would burn off energy in the wild by running long distances after prey. However, most pet chihuahuas live relatively sedentary lifestyles. As a result, they need to find other ways to stay active. Running in circles is one way that chihuahuas can fulfill their instinctual needs. 

🐕Zoning Out

Zoning out is a weird behavior that occasionally chihuahuas exhibit in moments of fear or uncertainty. The dog will appear to go into a trance-like state, with its eyes wide open but unseeing and their body utterly still. 

It’s not entirely clear what causes this behavior. It may be Chihuahua’s way of making themselves as small and unnoticeable as possible to avoid whatever is causing them stress. 


While all dogs like to dig from time to time, Chihuahuas seem to have a particular affinity for it. Some experts believe this behavior is rooted in the breed’s history as hunting dogs. In the wild, digging holes was often necessary to find prey. Today, many Chihuahuas still enjoy exploring to relieve boredom or stress. 

While it can be frustrating for owners, there are ways to manage this behavior. Providing your Chihuahua with plenty of toys and exercise can help to keep them from getting bored and stressed, and establishing a “digging zone” in your yard can help to minimize the damage. 

🐕Eating Poop

Did you know that some Chihuahuas have a strange habit of eating poop? While this may seem gross to us humans, it’s actually not that unusual for dogs. In fact, many dogs like to nibble on a little feces now and then. However, for Chihuahuas, this behavior can be a bit more extreme. Some owners report that their dogs will obsessively eat poop to the point where they miss meals or lose weight. 

Both anxiety and boredom are common contributors to this behavior, and it can be challenging to break your dog this habit. If you’re struggling to stop your Chihuahua from eating poop, consider talking to your veterinarian about possible solutions. 

Why Is My Chihuahua Acting Weird: Possible Reasons

chihuahua acting weird

Your Chihuahua may be behaving unusually for many different reasons. It’s important to remember that every dog is different, so the underlying cause of their behavior might not be the same as another dog. 

Some possible reasons why your Chihuahua might be acting weird include:

🐾Change in Routine

Chihuahuas are creatures of habit, and even a small change in their daily routine can throw them off. For example, if you usually take your Chihuahua for a walk in the morning but switch to the afternoon, they may become restless and antsy. Or, if you change the route of your walk, they may get confused and disoriented. Even something as simple as moving their food bowl to a different spot can upset them. 

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If your Chihuahua is acting weird, think of any changes you’ve made to their routine recently. Once you identify the source of the problem, you can help your Chihuahua adapt and return to its usual self.

🐾Fear of People and Other Animals

Chihuahuas are small dogs, making them feel vulnerable in new or unfamiliar situations. If they feel threatened, they may instinctively lash out or try to hide. In some cases, this fearfulness can lead to aggression. However, it is crucial to remember that every dog is different, and not all chihuahuas will react the same way to new people or animals. 

Is there a particular person or animal that triggers the fear response? Once you identify the source of the fear, you can work on helping your Chihuahua overcome it. It may involve slowly introducing your Chihuahua to the feared object or situation, providing positive reinforcement when the Chihuahua remains calm, and consulting with a veterinarian or behaviorist for more advice. 

🐾Separation Anxiety

Chihuahuas are prone to separation anxiety, which can manifest itself in numerous ways. Common signs of separation anxiety include excessive barking or whining, destructive behaviors such as chewing or digging and attempts to escape from the home. If your Chihuahua is displaying any of these behaviors, it may be due to separation anxiety. 

Providing your Chihuahua with many opportunities to interact with other dogs and people is the most beneficial way to fix this problem. Take them for walks in the park, set up playdates with other dogs, and spend plenty of time cuddling and playing with them at home. 

🐾Disease or Illness

When a man’s best friend isn’t acting like themselves, it’s natural to worry. After all, our canine companions are family members, and we want nothing more than the best for their happiness and wellbeing. If your Chihuahua is acting weird, it could be due to disease or illness. While most chihuahuas are relatively healthy dogs, they are susceptible to certain health problems, such as heart disease, respiratory problems, and hypoglycemia. 

If your Chihuahua is acting tired, lethargic, or uninterested in its usual activities, it could be a sign that something is wrong. If you notice any of these symptoms, you should take your dog to the vet for an examination. Many different diseases are treatable if given the appropriate care promptly. However, if you do not nip the problem in the bud, it could lead to serious health problems. 

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We all know that diet can play a significant role in our overall health, but did you know that it can also affect your mood and behavior? For example, if you consume too much sugar, you might feel hyperactive or jittery. Furthermore, if you eat too many processed foods, you may feel sluggish and depleted of energy. Likewise, if your diet lacks specific nutrients, it could lead to problems like anxiety or depression.

The same is true for our Chihuahua. If your Chihuahua is acting weird, one common reason could be their diet. Maybe they’re not getting enough of the proper nutrients, or they could be overeating. Of course, there could be other reasons for their unusual behavior, but it’s worth looking into their diet as a possible cause. If you think that diet might be the issue, talk to your vet about making changes to your Chihuahua’s food and see if that makes a difference.


Have you ever noticed your Chihuahua acting weird when they’re bored? Contrary to popular belief, chihuahuas are not low-energy dogs. They need plenty of mental stimulation to stay happy and healthy. When they’re bored, chihuahuas can become anxious and destructive. They may start chewing on furniture or barking excessively. 

To prevent your Chihuahua from getting bored, provide them with plenty of toys and playtime. Take them for walks or jog around the neighborhood. And if you’ll be away from home for long periods, consider hiring a dog sitter to keep your chihuahua company. By providing your Chihuahua with the attention they need, you can help them stay calm and well-behaved.

🐾Abuse or Mistreatment

Although chihuahuas are small dogs, they are loyal and loving companions. On the other hand, mistreatment can cause them to become fearful and withdrawn. 

The first step is to remove the dog from the abusive situation. Once the dog is in a safe place, you can then begin to assess the extent of the abuse. If the dog has sustained any physical injuries, you will need to take them to a veterinarian for treatment. In addition, you may need to provide the dog with behavioral therapy to help them overcome their fearfulness. 


Have you ever attempted to concentrate on something important, but all you can hear is a loud, persistent noise? Maybe it’s the sound of a construction site outside your window or your neighbor’s television blaring through the walls. Either way, the noise is likely to be distracting and frustrating. 

Now imagine how that noise might affect your dog. Dogs have sharper hearing than humans, which means they are much more sensitive to loud noise. For a dog, living in an environment with constant noise can be confusing and stressful. As a result, it’s not surprising that many dogs exhibit strange behaviors when constantly bombarded with loud noises. Try to make a quiet area for your dog to relax and see if that changes its behavior.

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🐾New Environment

If you have recently moved to a new home or made other significant changes to your Chihuahua’s surroundings, it is not surprising if they are acting a bit weird. They may seem restless or agitated, and they may even start to exhibit some destructive behaviors. 

The best way to help your Chihuahua adjust to their new environment is to give them plenty of love and attention. Try to create a routine for them, provide them with plenty of toys, and chew bones to keep them occupied. 


Just like humans, dogs experience hormonal changes throughout their lives. For example, females will have a heat cycle several times a year during which their hormones fluctuate dramatically. The male dog also experiences changing hormone levels, although not as dramatically as females. 

Older dogs may develop hormone levels imbalances that can cause various health problems, including behavioral changes. If your Chihuahua has been acting out of character, it’s worth discussing with your veterinarian to see if hormones could be the culprit.

Things to Do if Your Chihuahua Is Acting Weird  

When your Chihuahua is acting weird, it’s important not to panic. Try to stay calm and observe your dog closely. If possible, take a video or picture of their behavior to show your veterinarian. It will help them make a diagnosis.

You may do the following things: 

✔️Pay Attention to Their Behavior

Try to notice when they start behaving differently and see if you can identify any patterns. It may be easier to find a cause if you can narrow down the time frame or situations in which your Chihuahua behaves strangely.

✔️Look For Possible Causes

Once you’ve determined when your Chihuahua is acting weird, you can start looking for possible causes. If they only act strange around other dogs, it could be a sign of anxiety or fear. If they seem to be in pain when they act weird, it could be a health issue. There are numerous explanations why your Chihuahua may be acting strangely, so it is critical to consider all options.

✔️Take Them to the Vet

If you’re still unsure what’s causing your Chihuahua’s weird behavior, you can always take them to the vet for a checkup. The veterinarian will be able to provide you with a clearer picture of what is occurring and evaluate whether or not there is a health problem underlying their behavior.

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✔️Help Them Feel Better

Once you’ve determined the cause of your Chihuahua’s weird behavior, you can start taking steps to help them feel better. You can work on socializing them and helping them build confidence if they’re anxious or afraid. If they’re in pain, you can talk to the vet about possible treatments. You can make your Chihuahua feel better by doing many things, so don’t be afraid to ask for assistance if you need it.

✔️Be Patient

Your Chihuahua may need time to adjust to whatever is causing its strange behavior. Allow them the time and space they require to feel better. If you’re concerned about their progress, you can always talk to the vet for advice.

Frequently Asked Questions

Q. Why do Chihuahuas hide when they are sick?

When a Chihuahua is sick, it may try to hide its symptoms to avoid appearing weak or vulnerable. In the wild, sick or injured animals are more likely to be attacked by predators, leading researchers to hypothesize that this behavior is an evolutionary adaptation. By hiding its symptoms, a sick Chihuahua can increase its chances of survival. 

Furthermore, this behavior may be because Chihuahuas are bred to be companion animals. When they are sick, they may instinctively seek out the comfort and protection of their owners. Regardless of its reasons, sick Chihuahuas often benefit from being kept in a warm, safe place where they can rest and recuperate.

Q. Why is my Chihuahua trembling but behaving normally?

Chihuahuas are prone to a condition called hypoglycemia, which is low blood sugar. When blood sugar drops, it can cause tremors, weakness, lethargy, and in severe cases, seizures. If your Chihuahua is trembling but behaving normally, it’s likely due to hypoglycemia. 

Many things can trigger hypoglycemia in Chihuahuas, including strenuous exercise, not eating for several hours, or overheating. Some Chihuahuas are also more susceptible to hypoglycemia due to genetics. If you think your Chihuahua is experiencing hypoglycemia, give them a small amount of food or sugar water and monitor their condition. If the tremors persist or they become lethargic or weak, take them to the vet immediately.

Q. Do Chihuahuas want to die alone?

When a pet owner sees their beloved Chihuahua for the last time, it is often a peaceful and mutually terminal experience. The owner has typically decided to euthanize their furry friend due to age, medical condition, or quality of life. In those final moments, it can seem as though the Chihuahua knows what is happening and wants to be alone with its human. However, this is likely not the case. Chihuahuas do not have the same cognitive awareness as humans, so they cannot process death similarly. Instead, they may simply be reacting to their owner’s emotions. 

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In the time leading up to euthanasia, if the owner of a Chihuahua is upset or anxious, the dog will pick up on those cues and may become agitated or try to hide. However, it does not mean that they want to die alone. Animals typically crave companionship in times of stress and insecurity. So while a Chihuahua may want to be alone in their final moments, they are likely just seeking comfort from their favorite human.

Q. Why is my Chihuahua afraid of everything?

Many people think of Chihuahuas as being feisty and fearless, but the truth is that many of these dogs are actually quite timid. There are a lot of different things that could be causing your Chihuahua to be afraid of everything. It’s possibly related to genetics; certain Chihuahua lines have a higher incidence of anxiety than others. It could also result from early life experiences, such as abandonment or neglect. Or it could simply be that your dog is naturally anxious and shy. 

Regardless of the cause, there are a few things you can do to help your Chihuahua feel more comfortable in the world:

  1. Provide plenty of socialization opportunities so your dog can learn to interact with other people and animals.
  2. Create a safe and secure home environment where your dog can always feel safe and loved.
  3. Always exercise patience and understanding with your canine companion, and never coerce them into doing something they feel uneasy about.

Your Chihuahua will be able to live a fear-free life and enjoy the benefits of a happy and healthy lifestyle if you are patient and give them time.

Final Thoughts

If your Chihuahua is acting weird, it’s important to remember that there could be an underlying cause. Whether it’s due to illness, anxiety, or something else, you can do several things to help your furry friend feel better. If you’re concerned about your Chihuahua’s health or behavior, always consult a veterinarian or certified animal behaviorist. They will assist you in determining the reason behind your Chihuahua’s peculiar behavior and give you advice on how to assist them most effectively.

Do you have a Chihuahua that sometimes acts weird? What are some of the things they do? Share your stories in the comments below!