T
Species Profile

Taco Terrier

Canis lupus familiaris

Tiny body, terrier bravery
Mary Swift/Shutterstock.com

Taco Terrier Distribution

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Origin Location

This map shows the native origin of the Taco Terrier. As a domesticated species, they are now found worldwide.

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Size Comparison

Human 5'8"
Taco Terrier 9 in

Taco Terrier stands at 13% of average human height.

A Chihuahua x Wire Fox Terrier mixed breed dog (also known as a Wire Chiwoxy) outdoors, looking up at the camera

At a Glance

Domesticated
Also Known As Toy Fox Chi, Chihuahua–Toy Fox Terrier mix, Chihuahua Fox Terrier mix, Toy Fox Terrier–Chihuahua cross, Chihuahua x Toy Fox Terrier, TFT Chihuahua mix
Diet Omnivore
Activity Diurnal+
Lifespan 5 years
Weight 5.5 lbs
Status Not Evaluated
Did You Know?

"Taco Terrier" is a designer-mix nickname; individuals can resemble either Toy Fox Terrier or Chihuahua strongly.

Scientific Classification

A small companion mixed-breed dog produced by crossing a Toy Fox Terrier with a Chihuahua. Typically toy-sized, lively, and people-oriented, with variable coat type and ear set depending on parentage. Temperament and appearance can differ widely between individuals.

Kingdom
Animalia
Phylum
Chordata
Class
Mammalia
Order
Carnivora
Family
Canidae
Genus
Canis
Species
lupus

Distinguishing Features

  • Toy-sized, lightweight companion build
  • Terrier-like alertness and drive
  • Often large upright or semi-upright ears
  • Short coat common, but varies by mix
  • High energy, quick and agile

Physical Measurements

Males and females differ in size

Height
♂ 9 in (8 in – 11 in)
♀ 9 in (8 in – 11 in)
Length
♂ 1 ft 5 in (1 ft 2 in – 1 ft 8 in)
Weight
♂ 9 lbs (6 lbs – 12 lbs)
♀ 7 lbs (4 lbs – 11 lbs)
Tail Length
♂ 6 in (4 in – 7 in)
♀ 4 in (3 in – 6 in)
Top Speed
17 mph
running

Appearance

Primary Colors
Secondary Colors
Skin Type Smooth coat
Distinctive Features
  • Toy-sized, compact build distinguishing it from larger domestic dogs.
  • Large upright ears common; some individuals have semi-pricked terrier ears.
  • Short, glossy coat typical; occasional slightly longer or denser coat occurs.
  • Big round eyes and short muzzle; Chihuahua influence varies widely.
  • High energy, alert expression; quick, springy gait typical of terrier mixes.
  • Often delicate limbs; prone to patellar luxation and soft-tissue injury.
  • Common dental crowding; needs frequent tooth brushing and dental checks.
  • Cold-sensitive due to small size and short coat; benefits from sweaters.
  • May show tremor or anxiety; early socialization and gentle handling help.

Sexual Dimorphism

Sexual dimorphism is mild: males are often slightly heavier with broader heads and chests, while females tend to look finer-boned. Coat color and ear set do not reliably differ by sex.

♂
  • Slightly broader chest and neck, giving a more square outline.
♀
  • Often finer bone structure and lighter frame at the same height.

Did You Know?

"Taco Terrier" is a designer-mix nickname; individuals can resemble either Toy Fox Terrier or Chihuahua strongly.

As domestic dogs (Canis lupus familiaris), they're wolf descendants selectively bred for companionship, not survival hunting.

Many inherit terrier "vermin-hunter" instincts, making them quick, toy-motivated, and eager to chase small moving objects.

Ears may be upright, semi-pricked, or "airplane" style; ear set often changes as puppies mature.

Coats range from smooth and short to slightly longer; shedding and grooming needs vary by parent influence.

Toy size means tiny meals and warmth matter-some are prone to low blood sugar if meals are skipped.

Unique Adaptations

  • Miniaturized build distinguishes them from the wolf-derived baseline: reduced body mass, shorter muzzle, and juvenile-like features.
  • Large, expressive ears improve sound detection and social signaling, useful for close human communication.
  • Compact, agile frames suit indoor living-quick turns and short bursts of speed fit small spaces.
  • High food motivation can aid training, but also increases obesity risk without measured portions and daily activity.
  • Cold sensitivity is common in short-coated individuals; sweaters and warm bedding improve comfort and reduce shivering.

Interesting Behaviors

  • Often bonds intensely with one person, shadowing them room-to-room like a "velcro dog."
  • Alert watchdog behavior is common: quick barking at new sounds, door knocks, or unfamiliar footsteps.
  • May "burrow" under blankets to stay warm, a frequent small-dog comfort and temperature-regulation habit.
  • Terrier-side prey drive can appear as pouncing, shaking toys, and sprinting after fast-moving objects.
  • Many show "big-dog confidence," posturing or charging forward despite toy size and limited bite strength.

Cultural Significance

They reflect modern companion-dog culture: tiny, apartment-friendly mixes shaped by human preference. Their parent breeds carry U.S. toy-terrier tradition and Mexico-associated Chihuahua symbolism in global pop culture.

Myths & Legends

In Aztec tradition, small companion dogs were believed to guide souls through the underworld, sometimes buried to aid the departed.

Mexican folk belief holds that a dog can "take on" illness or misfortune from its owner, a protective companion role echoed in stories.

European household lore long treated small watchdogs as guardians that sense unseen visitors, barking to warn of spirits or ill intent.

In modern U.S. pop culture, the Chihuahua became a comic "tiny-but-bold" icon, reinforcing the idea that bravery isn't about size.

American ratting-dog anecdotes celebrate terrier lines as barn protectors, praised for fearlessly clearing rodents despite small stature.

Conservation Status

NE Not Evaluated

Has not yet been evaluated against the criteria.

Population Stable

Life Cycle

Birth 3 pups
Lifespan 5 years

Lifespan

In the Wild
2–12 years
In Captivity
10–18 years

Reproduction

Mating System Polygynandry
Social Structure Managed Domestic
Breeding Season Year-round; females cycle about twice yearly
Breeding Pattern Transient
Fertilization Managed Selective
Birth Type Internal_fertilization

Like domestic dogs, Taco Terriers show flexible mating with potential multiple partners, but breeding is typically human-managed with mate choice, timing, and health screening. Toy size may increase whelping difficulty risk, so supervised mating and veterinary support are common.

Behavior & Ecology

Social Pack Group: 3
Activity Diurnal, Cathemeral
Diet Omnivore Chicken

Temperament

People-oriented
Alert
Lively
Bold
Sensitive
Stubborn
Territorial
Prey-driven
Noise-reactive
Separation-prone
Cold-sensitive
Dental-disease
Patellar-luxation
Tracheal-collapse
Hypoglycemia
Early-socialization
Positive-training
Mental-enrichment
Weight-management
Harness-walking

Communication

high-pitched barks
alarm yaps
whines
growls
excited yips
body language
ear position
tail carriage
tremble display
pawing
licking
scent marking

Habitat

Biomes:
Temperate Forest Temperate Grassland Boreal Forest (Taiga) Tundra Alpine Desert Hot Desert Cold Mediterranean Savanna Tropical Dry Forest Tropical Rainforest Freshwater Wetland Marine +8
Terrain:
Plains Coastal Hilly Mountainous Valley Plateau Island +1
Elevation: Up to 16404 ft 3 in

Ecological Role

Domestic companion; minor household mesopredator of pests

pest control human companionship behavioral enrichment

Diet Details

Main Prey:
Mice Rats Small birds Insects
Other Foods:
Rice Oats Sweet potato Carrots Blueberries Pumpkin

Human Interaction

Domestication Status

Domesticated

Domestic dogs were domesticated from gray wolves roughly 15,000-30,000 years ago for companionship and work. The Taco Terrier is a modern companion mix (Toy Fox Terrier × Chihuahua), bred recently in homes/breeding programs, emphasizing toy size and lively temperament.

Danger Level

Low
  • Defensive nipping when startled
  • Resource guarding in some individuals
  • Falls/injury to dog if mishandled
  • Barking/reactivity causing minor incidents

As a Pet

Suitable as Pet

Legality: Generally legal; standard dog rules, licensing, leash laws apply.

Care Level: Moderate

Purchase Cost: Up to $800
Lifetime Cost: $12,000 - $28,000

Economic Value

Uses:
Companionship Breeding Services
Products:
  • companionship
  • stud fees
  • pet sales

Quick Take

The popular taco terrier is a designer terrier breed created by crossing a toy fox terrier with a chihuahua. The result is an adorable lap-sized dog that will quickly become your new best friend. Taco terrier owners usually fall in love with their dog’s big ears, sweet eyes, and incredibly attached personality.

Taco terriers are lively and affectionate dogs that make great companion animals. Although they’re not a good choice for families with children, these dogs are loving animals that are perfect for active adults.

An informative infographic about the Taco Terrier dog breed, showcasing its parent breeds, physical traits, personality pros and cons, and health requirements through colorful icons and text blocks.
They're tiny, adorable, and named after a fast-food icon—but don't let the cuteness fool you. These three-pound protectors pack intense loyalty and serious separation anxiety into one tiny package. © A-Z Animals

Owning A Taco Terrier: 3 Pros And Cons

Pros!Cons!
Loves to cuddle. Taco terriers are perfect lap dogs and will sit with you for hours at a time.Separation anxiety. Taco terriers don’t like to be left alone and need to accompany their owners to most locations.
Great guard dog. Although they’re small, you can count on your taco terrier to alert you whenever a stranger is at your door.Stranger aggression. Most taco terriers do not like strangers and will growl or bark if approached without warning.
Friendly and intelligent. Owners of taco terriers praise their pups for having bright and vibrant personalities.Extra shedding. Taco terriers are far from hypoallergenic; in fact, they’re known for shedding more than you would expect for a dog their size.

History Of The Breed

The Taco Terrier, like many designer mixed breeds, has not been around for that long, beginning around the late 1990s or early 2000s. Also known as the Chihuahua Fox Terrier mix, the toy Chitoxy, and the toy Chiwoxy, it has become a very popular dog, with its name referencing the Chihuahua featured in Taco Bell commercials.

Its parent breeds are the Chihuahua and the Toy Fox Terrier, two breeds that have a long history. The chihuahua is believed to have come from Mexico and has been around since the 9th century. It is thought to have been derived from the Techichi dog, an ancient Mesoamerican breed that was kept by the Mexican Toltec people. The toy fox terrier originates from the United States, dating back to the early 1900s. Originally intended to be a dog that would chase rodents and foxes, this small dog became popular in circuses and dog shows.

Size And Weight

Taco terriers are very small dogs that usually only weigh between three and eight pounds. Even when fully grown, these dogs don’t stand any taller than 11 inches at maximum. Female taco terriers are usually smaller than their male counterparts, although this can vary greatly based on the genetics of the parents. Taco terriers usually have black, white, or tan fur; the length is determined by whether their chihuahua parent had long or short hair. Other distinguishing features include large ears, pointed faces, and small but intelligent eyes.

Height (male)8-11 inches
Height (female)6-9 inches
Weight (male)5-8 lbs
Weight (female)3-6 lbs

Common Health Issues

Although hybrid dogs are usually healthier than their purebred ancestors, both of the taco terrier’s purebred parent breeds have a handful of health concerns that need to be addressed. Your taco terrier may be susceptible to heart problems, patellar luxation in the knees, eye problems, and a variety of other issues. Make sure to take your taco terrier puppy to the vet as soon as you bring them home. While you’re there, ask the doctor to check for:

  • Eye conditions
  • Heart murmurs
  • Pulmonic stenosis
  • Patellar luxation
  • Hydrocephalus
  • Hypoglycemia
  • Skin allergies
  • Tracheal collapse

Temperament

Animal, Animal Body Part, Animal Eye, Animal Head, Beauty

Taco terriers make perfect lap dogs and will sit with you for hours.

Taco terriers are incredibly loyal dogs that like to keep watch over their household. Expect your little guard dog to watch the windows and bark at strangers whenever they walk past. These dogs have energetic and attentive personalities; they love to watch television, listen in on family conversations, and generally make themselves part of their owner’s business. Because they’re so small, it’s common for pet owners to bring their taco terrier with them everywhere they go. These little dogs make great lap pets and love to be held for extended periods of time.

When relaxed, taco terriers love to play and will either chew on toys or roll around on the floor. Expect your terrier to display possessive behavior traits, especially if another dog is visiting. Because they experience high levels of separation anxiety, it’s best not to let your taco terrier out of your sight. However, if they know that their owner is in the room, these dogs become incredibly playful companions that the entire family will love.

How To Take Care Of A Taco Terrier

Taco terriers are vibrant and attentive dogs that always seem eager to be involved in the conversation. Keep your taco terrier close by your side, and make sure to keep an eye on them when other pets are around. These dogs love to sit on their owner’s lap and will always have an opinion about strangers. As long as you spend time with them and give them plenty of exercise, your taco terrier will be your best friend for many years to come.

The Best Dog Food

Taco terriers are small dogs that do not need very much food. Look for high-quality kibble that is intended for small dogs. Then, feed about a 1/2 cup portion twice a day; remember to consult your vet to make sure that this amount is correct for your terrier’s size and weight. Alternatively, you can make homemade dog food with lean meat and vegetables. Again, ensure that the portions are small, and reduce the amount you are feeding if your dog starts gaining weight or seems to have too much energy to burn. Dogs who get hypoglycemia should get a solid meal at least ninety minutes before exercising, so their blood sugar doesn’t dip too low.

With dogs like Taco Terriers that are prone to heart conditions, it’s probably safer to opt for legume-free food due to the link between heart failure and legumes in dog food.

Maintenance And Grooming

Taco terriers are known for shedding and need to be brushed regularly to keep their fur from matting, especially if they are descended from a long-haired chihuahua. If they take more after their toy fox parent, this shedding may be reduced to a minimum, but you’re still likely to find black and white hair all over your couch. To solve this problem, brush your terrier at least twice a week, and bathe them every month. You should also inspect and clean your terrier’s ears regularly to prevent infections.

Training

Taco terriers are energetic but temperamental dogs that may be difficult to train. For best results, begin working with your dog as a puppy, and continue training sessions even after they are full-grown. Don’t expect your taco terrier to learn more than basic commands, and remember to refresh their training regularly. These dogs do best with short training sessions. Always end on a positive note to boost your dog’s confidence and encourage them to look forward to training in the future.

Exercise

Taco terriers are playful dogs that need plenty of exercise to maintain a good attitude. Try to take your terrier out for at least one 30-minute walk every day. Remember that small dogs tire easily as puppies; your terrier will be more interested in going for walks once they are fully grown. In addition to walks, you should also make sure that your little chihuahua mix has plenty of room to run around on the floor without interruptions by children or other pets.

Puppies

Taco Terrier puppies are inquisitive but fragile. Like any other chihuahua mix, these dogs should be monitored closely for health issues while they are young. Keep a close eye on your dog until they are larger, and start training early to help them work on their basic commands.

Taco Terriers And Children

Taco terriers make great lap dogs, but they are not a good choice for families with children. These small dogs need a lot of attention and don’t do well around small kids who do not understand boundaries. Far too many taco terriers end up at animal rescues because their families were not prepared to give them the attention they need. Only bring home one of these dogs if you’re prepared to watch them constantly and take them with you when you leave the house.

Dogs Similar To Taco Terriers

Taco terriers are small and vivacious dogs that are great to have around. If you’re looking for another small dog to adopt, consider getting a regular chihuahua, a toy poodle, or a Boston terrier.

  • Chihuahua: With big ears and a face that wins hearts, the chihuahua is a classic breed that never goes out of style.
  • Toy poodle: The toy poodle is a great choice for families who want a dog that is both small and hypoallergenic.
  • Boston terrier: Boston terriers are slightly larger than most toy dogs and love to run around outside.

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Sources

  1. Wag Walking / Accessed April 6, 2021
  2. Dog Breed Info / Accessed April 6, 2021
  3. 101 Dog Breeds / Accessed April 6, 2021
  4. Dog Breeds List / Accessed April 6, 2021
Melissa Bauernfeind

About the Author

Melissa Bauernfeind

Melissa Bauernfeind was born in NYC and got her degree in Journalism from Boston University. She lived in San Diego for 10 years and is now back in NYC. She loves adventure and traveling the world with her husband but always misses her favorite little man, "P", half Chihuahua/half Jack Russell, all trouble. She got dive-certified so she could dive with the Great White Sharks someday and is hoping to swim with the Orcas as well.
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Taco Terrier FAQs (Frequently Asked Questions)

A taco terrier is a toy fox terrier and chihuahua mix. These tiny dogs have big ears, fluffy fur, and pointed faces. Taco terriers generally have black, white, or tan fur in various patterns. One of the main ways to tell a taco terrier apart from a chihuahua is that they don’t have the same large heads or big eyes that the parent breed is known for.