Australian Terrier vs Chihuahua
A side-by-side comparison to help you find the right breed for your lifestyle.
Australian Terrier
Also known as: Aussie, Australian Rough
The Australian Terrier is a small, robust breed known for its spirited personality, intelligence, and loyalty. Originally bred to hunt vermin and guard homes, this terrier is both a devoted companion and an alert watchdog, characterized by its distinctive rough, weather-resistant coat and keen expression.
Small
Medium
11-15 yrs
25-28 cm
6.8-9.1 kg
Chihuahua
The Chihuahua is a small dog breed known for its lively personality and alertness, often possessing a big-dog attitude despite its petite size. Originating from Mexico, this breed is characterized by its expressive eyes, large ears, and comes in a variety of colors and coat types.
Extra Small
Medium
14-18 years yrs
N/A
Quick Comparison
| Trait | Australian Terrier | Chihuahua |
|---|---|---|
| Energy | ||
| Trainability | ||
| Grooming Needs | ||
| Family Friendly | ||
| Independence |
Key Characteristics
| Good with Kids | ||
| Good with Dogs | ||
| Good with Cats | ||
| Hypoallergenic | ||
| Apartment Friendly | ||
| First-Time Owner OK |
| Detail | Australian Terrier | Chihuahua |
|---|---|---|
| Size | Small | Extra Small |
| Energy Level | Medium | Medium |
| Grooming | Medium | Low |
| Trainability | Moderate | challenging |
| Barking Level | High | High |
| Shedding Level | Low | Medium |
| Housing | Yard | Apartment |
Owner Fit & Decision Guide
Owner Match
| Trait | Australian Terrier | Chihuahua |
|---|---|---|
| Experience Level | Beginner (with conditions) | Experienced |
| First-Time Owner | ||
| Ideal Owner | Confident beginner or experienced owner willing to train consistently. Works from home or has flexible schedule. Single-dog household preferred, or with opposite-sex passive dog. No small prey animals. Comfortable with managing barking through training. | Active individual or family who can provide adequate exercise and training for a Chihuahua. |
Australian Terrier Dealbreakers
- Want a silent dog
- Have pocket pets (hamsters, rats) that roam
- Want a dog that can be off-leash in unfenced areas
- Unwilling to manage potential dog-aggression
- Passive or permissive owner (if you treat them like a baby, they will become a tyrant)
Chihuahua Dealbreakers
- Cannot meet 20-30 min daily exercise
- Cannot commit to grooming needs
Surrender Risk
| Factor | Australian Terrier | Chihuahua |
|---|---|---|
| Risk Level | Low | Medium |
| Primary Reasons | Barking complaints from neighbors, Incompatibility with other pets (chasing cats, fighting dogs), Owners buy thinking they are low-maintenance small dogs and are overwhelmed by their big-dog energy and tenacity | Underestimated exercise needs, Behavioral challenges, Cost of care |
Temperament & Personality
Behavior Comparison
| Trait | Australian Terrier | Chihuahua |
|---|---|---|
| Prey Drive | ||
| Watchdog Ability | ||
| Stranger Friendly | ||
| Drool Level | ||
| Wanderlust |
Vocalization
| Trait | Australian Terrier | Chihuahua |
|---|---|---|
| Barking Level | High | High |
| Howling Tendency | ||
| Whining Tendency | Low | Low |
| Separation Vocalization |
Safety & Reliability
| Trait | Australian Terrier | Chihuahua |
|---|---|---|
| Escape Artist | ||
| Dog Park Suitable | ||
| Off-Leash Reliable | ||
| Small Animal Safe | ||
| Leash Reactivity | ||
| Resource Guarding Risk | Low | Low |
Australian Terrier Social Traits
Medium
Often bossy and may spark fights with much larger dogs, refusing to back down. Same-sex aggression is a known trait.
Chihuahua Social Traits
Moderate
Selective
Training
Australian Terrier
- Harsh methods trigger their 'terrier grit,' causing them to shut down or fight back
- Use high-value rewards (food/toys)
- Keep training sessions short and varied
- Practice 'Nothing in Life is Free' to maintain household boundaries
Chihuahua
- ** Positive reinforcement is the only option. Harsh methods cause them to shut down or bite defensively.
Australian Terrier Considerations
Bred to alert settlers to snakes and intruders, they score 5/5 on watchdog ability. In modern settings, this means barking at delivery trucks, hallway footsteps, and leaves blowing across the patio. Often a dealbreaker for renters with noise restrictions.
Documented risk of aggression toward dogs of the same sex, particularly between two females. This often emerges at sexual maturity (18-24 months) and can escalate from posturing to serious fighting. They generally do best as the only dog or with a companion of the opposite sex.
Their prey drive is not a game; it is a job. They were engineered to kill rats and snakes. They cannot be trusted with hamsters, rabbits, or guinea pigs, and they may harass cats that run. This is a Full Predatory Sequence breed—they do not just chase; they grab and shake.
Multi-Species Compatibility
| Species | Australian Terrier | Chihuahua |
|---|---|---|
| With Cats | Caution - safe only if raised together and the cat does not run | Generally safe with proper introduction |
| Small Mammals | Unsafe - high risk for hamsters, rabbits, guinea pigs, rodents | Supervision required |
| Birds / Reptiles | Unsafe - high risk | Caution advised |
Advanced Behavior
| Trait | Australian Terrier | Chihuahua |
|---|---|---|
| Predatory Sequence Risk | Full | Medium |
| Biddability | Medium | Low |
| Noise Sensitivity | Low | Low |
| Territorial Barking | ||
| Same-Sex Aggression Onset | 18 months | 18 months |
Australian Terrier: Full Predatory Sequence: Orient → Eye → Stalk → Chase → Grab-Bite → Kill-Bite. Bred to kill snakes and rats. You cannot 'train out' the desire to shake a rat; you can only manage it. Not 'will to please' dogs - they are 'what's in it for me?' dogs.
First Year & Life Stages
First Year Challenges
| Challenge | Australian Terrier | Chihuahua |
|---|---|---|
| Puppy Difficulty | ||
| Destructive Phase | 6-18 | 6-12 |
| House Training | Medium | Moderate |
| Crate Training | Medium | Medium |
| Adolescent Regression |
Australian Terrier: While small and portable, they are intense. House training is moderately difficult (terriers can be stubborn), and their sharp puppy teeth are used freely during play. Critical socialization window is 8-16 weeks - must socialize to handling and strangers to prevent natural wariness from turning into defensiveness.
Chihuahua: Chihuahua puppies require consistent training and patience.
Life Stages Timeline
| Stage | Australian Terrier | Chihuahua |
|---|---|---|
| Puppy Phase | 12 months | 12 months |
| Adolescence | 6-18 | 6-18 |
| Adult Years | 2-9 | 2-8 |
| Senior Onset | ~10 years | ~8 years |
| Peak Energy Age | 1-3 years | 1-3 years |
Size & Physical Characteristics
Physical Stats
| Measurement | Australian Terrier | Chihuahua |
|---|---|---|
| Height | 25-28 cm | N/A |
| Weight | 6.8-9.1 kg | N/A |
| Size Category | Small | Extra Small |
| Lifespan | 11-15 years | 14-18 years years |
| Litter Size | 4-6 | 4-8 |
Australian Terrier Coat
Chihuahua Coat
Lineage & Origin
| Detail | Australian Terrier | Chihuahua |
|---|---|---|
| Original Purpose | Kill rats and snakes in gold mines and sheep stations, tend sheep, and alert owners to intruders | The Chihuahua's lineage traces back to the Techichi, a mute companion dog of the Toltec civilization |
| Origin | Australia, 19th century | coat gene |
Breeding Details
| Detail | Australian Terrier | Chihuahua |
|---|---|---|
| C-Section Rate | Low | Varies |
| Whelping Difficulty | Easy | Medium |
| Puppy Mortality Rate | Low | Low |
Physical Risks
| Risk | Australian Terrier | Chihuahua |
|---|---|---|
| Bloat / GDV Risk | Low | Low |
| Slippery Floor Risk | Low | Low |
| Min Fence Height | 1.2m | 1.5m |
| Dig / Escape Risk | High | Low |
Health & Common Conditions
Australian Terrier Health Issues
Chihuahua Health Issues
Australian Terrier Suggested Tests
- Annual blood glucose and urinalysis (starting at age 5)
- OFA Patella Evaluation
- CERF Eye Examination
- Family history of Diabetes inquiry
Chihuahua Suggested Tests
- Regular dental check-ups and cleanings
- Annual cardiac auscultation
- Orthopedic check for patellar luxation
Health Risk Overview
| Risk Factor | Australian Terrier | Chihuahua |
|---|---|---|
| Cancer Risk | Low | Medium |
| Cardiac Risk | Low | Low |
| Neurological Risk | Low | Low |
| CCL/ACL Tear Risk | Low | Low |
| Vet Burden Tier | Medium | Medium |
Sensitivities & Allergies
| Sensitivity | Australian Terrier | Chihuahua |
|---|---|---|
| Skin Allergies | ||
| Environmental Allergies | ||
| Stomach Sensitivity | Low | Low |
| Food Allergies | General environmental allergens |
Health Maintenance
| Care Item | Australian Terrier | Chihuahua |
|---|---|---|
| Nail Growth Rate | Fast | Normal |
| Eye Care Needs | Low | Low |
| Anal Gland Issues | Rare | Occasional |
Senior Care & Aging
Australian Terrier Senior Care
Common Senior Issues
- Diabetes Mellitus (watch for excessive thirst/urination)
- Cataracts
- Joint stiffness
Mobility usually remains good until very late life. Primary concern in seniors is monitoring for diabetes symptoms (excessive thirst, frequent urination, weight loss despite normal eating).
Chihuahua Senior Care
Common Senior Issues
- Arthritis
- Vision decline
- Cognitive changes
Senior care varies by individual health.
Grooming & Care
Australian Terrier
medium maintenanceChihuahua
low maintenanceLifestyle Compatibility
Australian Terrier Daily Life
Chihuahua Daily Life
Housing & Legal Restrictions
| Restriction | Australian Terrier | Chihuahua |
|---|---|---|
| BSL Restricted | ||
| Common Rental Ban | ||
| Insurance Blacklist | ||
| Weight Category | Under 25lbs | Under 50lbs |
Climate Tolerance
| Climate | Australian Terrier | Chihuahua |
|---|---|---|
| Heat Tolerance | ||
| Cold Tolerance | ||
| Water Affinity | Low | Medium |
Travel Compatibility
| Activity | Australian Terrier | Chihuahua |
|---|---|---|
| Car Travel | Good | Good |
| Camping | ||
| Beach Friendly | ||
| Hiking Rating | ||
| Cabin Flight Eligible | ||
| Hotel Friendly Size |
Niche Suitability
| Role | Australian Terrier | Chihuahua |
|---|---|---|
| Service Dog | Low | Low |
| Therapy Dog | Medium | Low |
| Deep Pressure Therapy | ||
| Canicross / Bikejoring | ||
| Apartment Adaptable | ||
| Tactile / Sensory Friendly | ||
| Livestock Guardian | ||
| Medical Alert | Low | Low |
Costs & Expenses
Upfront Costs
| Cost | Australian Terrier | Chihuahua |
|---|---|---|
| Purchase Price | $1,200-2,500 | N/A |
| Initial Cost Range | $1,200–$2,500 | $1,000–$2,500 |
| Cost Tier |
Ongoing Costs
| Cost | Australian Terrier | Chihuahua |
|---|---|---|
| Monthly Range | $120–$200 | $50–$110 |
| Yearly Range | $1,440–$2,400 | $600–$1,320 |
| Food / Month | $30-50 | $20-50 |
| Insurance / Month | $40-70 | $30-60 |
| Grooming / Session | $50-80 | $0-50 |
| Vet Routine / Year | $300-600 | $20-50 |
| Monthly Cost Tier |
Australian Terrier Lifetime Cost
$15,000-30,000
Chihuahua Lifetime Cost
N/A
Quirks & Fun Facts
Daily Quirks
| Quirk | Australian Terrier | Chihuahua |
|---|---|---|
| Snoring | ||
| Flatulence | Rare | Occasional |
| Slobber Level | None | Low |
| Smell When Wet | Mild | Moderate |
| Zoomies Frequency | Weekly | Occasional |
| Counter Surfing | ||
| Digging Tendency | High | Low |
Australian Terrier Quirks
The Ruff
Distinctive ruff of hair around the neck (like a lion's mane) which was historically protective against snake bites
The Topknot
The soft, silky hair on their head contrasts with the wire body coat and needs gentle combing
Digging for Fun
They don't just dig to escape; they dig for fun. Provide a designated sandpit and bury toys in it to save your flowerbeds.
Bossiness
They will attempt to run the household. 'Nothing in life is free' training is recommended to maintain boundaries.
Frequently Asked Questions
Turn your dog into a brand deal.
Pet brands are looking for authentic creators — not celebrities. If you own a Australian Terrier or Chihuahua, you can get free products, gear, and exclusive perks just for sharing your dog's life on Instagram.
No followers minimum · Free to join
Compare with Other Breeds
Compare Australian Terrier with:
Based on comprehensive breed research data.