Chihuahua & Carin Terrier Mix-Toxirn- A Breed Complete Guide

Ever seen a Cairn Terrier mixed with a Chihuahua? If you’re searching for a tiny dog breed that is robust, affectionate, and playful, the Toxirn is the ideal choice.

Although Toxirn dogs are less prevalent than other mixed-breed Chihuahuas, they are still excellent companions for individuals or families who desire a little bit of everything in a dog.

Because Toxirn dogs can be stubborn at times, just like any terriers, be prepared to invest some effort in their training. However, if you give your Chihuahua Cairn Terrier mix enough love and time, they will make the ideal companion!


Toxirn History 

The Chihuahua

The Chihuahua is a little dog with big ears that has a unique appearance. However, where did this breed come from? The most widely acknowledged hypothesis holds that the Chihuahua got its start in Mexico and got its name from the state of Chihuahua in Mexico.

This idea holds that traders and intrepid travelers who traveled to Mexico in the 19th century were the ones who initially introduced the breed to Europe.

The Cairn Terrier

The Scottish Gaelic phrase for “stack of stone,” which gave rise to the name of the Cairn Terrier, is believed to have been used to hunt rodents among the stone mounds that early farmers left behind.

Nevertheless, this theory is not supported by any solid evidence. A different hypothesis holds that the cairn terrier originated from the Isle of Skye Terrier in Scotland, which the Vikings carried to the mainland in the ninth century.

The Toxirn

The 1980s saw the emergence of the Toxirn, a relatively new dog breed in the USA. Although the precise origins of the dog remain unknown, several theories have been proposed to explain their creation. A common idea holds that the Cairn Terrier/Chihuahua hybrid was created as a calmer, less allergic cross of the Chihuahua.

The American Kennel Club does not accept Cairn Terrier Chihuahua Mixes.

white toxirn looking at the camera

Toxirn Appearance

Cairn Terrier Chihuahua mixes usually blend the shaggy coat and courageous nature of a Cairn Terrier with the big ears and round head of a Chihuahua.

These puppies typically weigh between six and eighteen pounds and have a shoulder length of ten inches.

happy toxirn dog looking at the camera

Toxirn Temperament

The little dog with a huge personality is the Chihuahua Cairn Terrier Mix. Playful and full of energy, he enjoys taking in his surroundings.

Even though he’s small, he doesn’t hesitate to take on larger dogs. In addition, he is a breed that is renowned for its independence and for being obstinate and determined.

It does not, however, imply that he is not a faithful friend. He is ferociously loyal to his owner and will follow them wherever once they bond.

white toxirn looking at the camera

Toxirn Health

The average lifespan of a mixed Cairn Terrier and Chihuahua is 12 to 15 years.

In addition to acquiring some morphological and behavioral characteristics from their parent breeds, toxic breeds also carry over the same health problems.

We suggest that you talk to your dog’s breeder or vet about the health problems that your pet friends may be more likely to get.

Your dog’s owner will know about any health issues your puppy, whether it’s a mixed breed or not, might be prone to based on how healthy his or her parents are.

But if none of these work, you could also use a DNA test on the dog. I’ve used the Embark dog DNA test on my two dogs. I like that this DNA test for dogs can tell me what type they are and if they are healthy.

When the test results came back two weeks later, I was pleased to see that the breed ID results were very correct.

The health finding also helped me learn more about the health problems my two dogs are more likely to have and how I can better take care of them.



A disorder called hydrocephalus causes fluid to build up in the brain, causing the skull to grow. It frequently affects Cairn Terrier/Chihuahua mixes and, if untreated, can be fatal.

Though its exact etiology is uncertain, hydrocephalus is believed to run in families. Lethargy, seizures, a protruding skull, and bulging eyes are some of the symptoms.

Patellar Luxation

Cairn Terrier A disorder known as patellar luxation—a displaced knee joint—is more common in mixes of Chihuahuas.

For dogs that are contaminated, this can be an excruciatingly painful condition that, if ignored, can result in arthritis and other issues. The good news is that surgery can be used to cure patellar luxation, and many dogs who have this operation go on to lead happy, healthy lives.

Hip Dysplasia

Hip dysplasia is a disorder where the ball of the thighbone does not fit properly into the hip joint, and it is particularly common in mixes of Chihuahuas and Cairn Terriers. Arthritis and pain may result from this.

Hip dysplasia cannot be cured, but it can be managed and your dog can have a more comfortable life. To keep symptoms under control, exercise, and weight management are crucial. Your veterinarian may also suggest vitamins or medication.

Toxirn Care

You need to think about feeding, grooming, exercising, training, shedding frequency, and training a mixed Cairn Terrier and Chihuahua.


A dog with a Cairn Terrier and Chihuahua mix coat has two coats: the guard hair on the outside and the undercoat on the inside. The guard hair is wiry and coarse, while the undercoat is abundant and soft.

This combination offers weather protection and insulation, but it also needs to be groomed on a regular basis. Regularly brushing your Cairn Terrier/Chihuahua mix coat with a slicker brush and using a de-shedding tool to get rid of loose hair is the best method to take care of them.

Furthermore, it’s crucial to give them a bath on a regular basis (usually once a month) with shampoo and conditioner made specifically for breeds with double coats.

Shedding level

The mix of Cairn Terrier and Chihuahua is regarded as a mild to moderate shedder. They will therefore have some hair loss, although not as much as those of other breeds.

The Toxirn’s double layer aids in retaining hair and preventing it from shedding.

Since his coat is bred to be hypoallergenic, it produces less dander—a frequent allergen—than that of other dogs. The Cairn Terrier-Chihuahua mix usually only needs to be brushed once or twice a week, which helps to minimize hair loss.

Dogs mixed with Cairn Terriers and Chihuahuas are not hypoallergenic.


Mixes of Chihuahua and Cairn Terrier are highly sensitive to the feelings of people around them. They consequently frequently exhibit people-pleaser tendencies and a desire to please their owners.

Because of this characteristic, Toxirn dogs are great candidates for training programs since they have a strong desire to please their teachers.

But it’s crucial to keep in mind that Cairn Terrier/Chihuahua hybrids have sentiments and wants of their own. Even while they might be eager to please if they feel that they are falling short of your expectations, they can easily become overwhelmed.

Because of this, it’s critical to be kind and patient with your Toxirn and to make sure they receive lots of praise when they succeed.


What you feed your Chihuahua-Cairn Terrier mix will depend on how old it is, how active it is, and how healthy it is in general. In general, though, most Toxins need about ¼ to ½ cups of food every day.

One meal in the morning and one at night should be made out of this.

It is better to be safe than sorry when it comes to how much food to give your Chihuahua Cairn Terrier mix. Don’t give them too much or too little.


Mixed-breed Cairn Terriers and Chihuahuas need at least 30 minutes of exercise every day. These dogs have a lot of energy and need to be trained often to keep them from getting too excited or worried.

You can give your Cairn Terrier Chihuahua mix the exercise they need by taking them for a walk or run every day. Plus, playing fetch or other interactive games with your Toxin is a great way to keep their minds and bodies busy.

Is Toxirn The Right Dog For Me?

Toxirn and Other Pets

People say that Cairn Terriers are generally friendly and good with other animals. They have a strong desire to hunt because they were bred to do so. There is no doubt that they are friendly and social, though.

On the other hand, Chihuahuas don’t always get along well with other pets. They might be very independent and even cut off from other people. On the other hand, they are very attached to their owners and can be great pets.

What can you expect from a Chihuahua and Cairn Terrier mix?

It depends a lot on what traits the puppy gets from each parent. As long as he acts like his Cairn Terrier dad, he should get along well with other pets.

He might not get along with other pets as well if he is like his Chihuahua mom. Always start socializing your Cairn Terrier Chihuahua mix with other dogs early and often. This will help him learn how to get along with them.

Doesn’t get along with small kids

People like the Cairn Terrier Chihuahua mix dog breed, but people who want to get one should know that they don’t always get along well with kids.

The Cairn Terrier part is known for being brave and independent, and the Chihuahua part is known for being strong-willed and guardian.

It makes Toxirn dogs very quick to bark and bite if they feel attacked.

Their toys and food may also become very important to them, which can be a problem if there are young children in the house.

If you have young children, you might want to get a different kind of dog.

Perfect For Apartment living

Apartment dwellers will love Cairn Terrier Chihuahua mixes because of their compact size and low upkeep requirements.

Given their high energy levels, Toxirns may not adapt well to living in compact spaces if they are unable to have adequate room to run around.

But, if they have enough exercise, they are also highly adaptive and can become used to living in an apartment.

Toxirn Male vs Female

Size is a major distinction between male and female Chihuahua Cairn Terriers. In addition to being bigger than females, males also have a tendency to be more self-reliant and forceful.

However, female Toxirns tend to be tastier and more docile. They might also be closer to their owners and more prone to separation anxiety.

Quick Breed Summary Table

Weight 6-18 pounds
Height 8-10 inches
Size Small
Coat Type short
colors Brown, black, gray, white
Amount of Shedding  Rarely
Nose Black
Ears stand up
Temperament loyal, loving, protective, stubborn, and sometimes aggressive.
Life Expectancy 12 – 15 years
Hypoallergenic No
Intelligence Yes
Kid-Friendly They need training
New Owner Friendly No
Activity level Active
Breed Recognition None

Here is a video of the Toxirn dog. Enjoy!


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