Chihuahua vs Scottish Sheepdog Longhair
A side-by-side comparison to help you find the right breed for your lifestyle.

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

Scottish Sheepdog Longhair
Also known as: Rough Collie, Lassie Dog, Scottish Collie, Long-Haired Collie
The Scottish Sheepdog Longhair, also known as the Rough Collie, is a highly intelligent and elegant herding breed renowned for its striking long coat, loyalty, and gentle temperament. Made famous by 'Lassie,' this breed was originally developed in the Scottish Highlands as a shepherd's dog and is now cherished as a devoted family companion.
Large
Medium
12-14 yrs
56-66 cm
Quick Comparison
| Trait | Chihuahua | Scottish Sheepdog Longhair |
|---|---|---|
| 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 | Chihuahua | Scottish Sheepdog Longhair |
|---|---|---|
| Size | Extra Small | Large |
| Energy Level | Medium | Medium |
| Grooming | Low | High |
| Trainability | challenging | Easy |
| Barking Level | High | High |
| Shedding Level | Medium | High |
| Housing | Apartment | Yard |
Owner Fit & Decision Guide
Owner Match
| Trait | Chihuahua | Scottish Sheepdog Longhair |
|---|---|---|
| Experience Level | Experienced | Beginner |
| First-Time Owner | ||
| Ideal Owner | Active individual or family who can provide adequate exercise and training for a Chihuahua. | Patient person or family who appreciates regular grooming as bonding time. Tolerant of barking or willing to train 'quiet' command. Enjoys moderate activity but not extreme athletics. Uses positive reinforcement training methods. |
Chihuahua Dealbreakers
- Cannot meet 20-30 min daily exercise
- Cannot commit to grooming needs
Scottish Sheepdog Longhair Dealbreakers
- Cannot tolerate barking
- Want a 'wash and go' dog - grooming is a hobby here
- Want a dog to jog 10 miles with you in July
- Use harsh training methods - they are 'soft' dogs that shut down
Surrender Risk
| Factor | Chihuahua | Scottish Sheepdog Longhair |
|---|---|---|
| Risk Level | Medium | Low |
| Primary Reasons | Underestimated exercise needs, Behavioral challenges, Cost of care | Barking - underestimated volume and frequency, Shedding/Grooming - extreme hair and time commitment, Lassie Effect - unrealistic expectations from TV show |
Temperament & Personality
Behavior Comparison
| Trait | Chihuahua | Scottish Sheepdog Longhair |
|---|---|---|
| Prey Drive | ||
| Watchdog Ability | ||
| Stranger Friendly | ||
| Drool Level | ||
| Wanderlust |
Vocalization
| Trait | Chihuahua | Scottish Sheepdog Longhair |
|---|---|---|
| Barking Level | High | High |
| Howling Tendency | ||
| Whining Tendency | Low | Medium |
| Separation Vocalization |
Safety & Reliability
| Trait | Chihuahua | Scottish Sheepdog Longhair |
|---|---|---|
| Escape Artist | ||
| Dog Park Suitable | ||
| Off-Leash Reliable | ||
| Small Animal Safe | ||
| Leash Reactivity | ||
| Resource Guarding Risk | Low | Low |
Chihuahua Social Traits
Moderate
Selective
Scottish Sheepdog Longhair Social Traits
Moderate
Generally dog neutral to friendly. Same-sex aggression is rare.
Training
Chihuahua
- ** Positive reinforcement is the only option. Harsh methods cause them to shut down or bite defensively.
Scottish Sheepdog Longhair
- Keep sessions short (5-10 mins) and fun
- Harsh corrections will cause them to shut down or become fearful
- They are intelligent but not 'neurotic' about problem-solving like Border Collies
- Train 'quiet' command early to manage barking
Scottish Sheepdog Longhair Considerations
Bred to communicate with shepherds over long distances, Collies alert to everything: delivery trucks, neighbors, squirrels, and wind. Unlike a guard dog's warning bark, a Collie often barks to chat or express boredom. The bark is sharp and piercing.
Exceptionally sensitive to their environment. Thunderstorms, fireworks, and even loud arguments can cause significant distress. Poor candidates for chaotic households with constant screaming or slamming doors.
The spectacular coat requires weekly 45-60 minute line-brushing sessions. Surface brushing leaves the undercoat to mat, leading to 'felted' dogs that must be shaved - a disaster for double coats. This is a hobby, not a chore.
Young Collies may attempt to herd running children by nipping at heels. This is an arrested predatory sequence behavior, not aggression, but it can be frightening for small children and requires management.
Multi-Species Compatibility
| Species | Chihuahua | Scottish Sheepdog Longhair |
|---|---|---|
| With Cats | Generally safe with proper introduction | High safety - one of the best large breeds for multi-species homes. Low prey drive. |
| Small Mammals | Supervision required | Generally safe - may try to herd but rarely has grab-bite instinct |
| Birds / Reptiles | Caution advised | Good with poultry if trained, though may harass if untrained |
Advanced Behavior
| Trait | Chihuahua | Scottish Sheepdog Longhair |
|---|---|---|
| Predatory Sequence Risk | Medium | Arrested |
| Biddability | Low | High |
| Noise Sensitivity | Low | High |
| Territorial Barking | ||
| Same-Sex Aggression Onset | 18 months | N/A |
Scottish Sheepdog Longhair: Predatory sequence is Orient → Eye → Stalk → (Stop). They may stare at and follow cats but grab-bite is largely inhibited. They WANT to work with you - unlike Huskies who ask 'what's in it for me?' a Collie asks 'what do you want me to do?'
First Year & Life Stages
First Year Challenges
| Challenge | Chihuahua | Scottish Sheepdog Longhair |
|---|---|---|
| Puppy Difficulty | ||
| Destructive Phase | 6-12 | 6-14 |
| House Training | Moderate | Easy |
| Crate Training | Medium | High |
| Adolescent Regression |
Chihuahua: Chihuahua puppies require consistent training and patience.
Scottish Sheepdog Longhair: Collie puppies are generally polite and observant, easier than Labradors or high-drive breeds. Main challenges are noise sensitivity and socialization to prevent shyness. May need ear taping for classic semi-prick look (cosmetic only).
Life Stages Timeline
| Stage | Chihuahua | Scottish Sheepdog Longhair |
|---|---|---|
| Puppy Phase | 12 months | 12 months |
| Adolescence | 6-18 | 6-18 |
| Adult Years | 2-8 | 2-8 |
| Senior Onset | ~8 years | ~9 years |
| Peak Energy Age | 1-3 years | 1-3 years |
Size & Physical Characteristics
Physical Stats
| Measurement | Chihuahua | Scottish Sheepdog Longhair |
|---|---|---|
| Height | N/A | 56-66 cm |
| Weight | N/A | N/A |
| Size Category | Extra Small | Large |
| Lifespan | 14-18 years years | 12-14 years |
| Litter Size | 4-8 | 6-10 |
Chihuahua Coat
Scottish Sheepdog Longhair Coat
Lineage & Origin
| Detail | Chihuahua | Scottish Sheepdog Longhair |
|---|---|---|
| Original Purpose | The Chihuahua's lineage traces back to the Techichi, a mute companion dog of the Toltec civilization | Gathering and droving sheep in the Scottish Highlands, farm guardianship |
| Origin | coat gene | Scottish Highlands and Northern England, 19th century |
Breeding Details
| Detail | Chihuahua | Scottish Sheepdog Longhair |
|---|---|---|
| C-Section Rate | Varies | Low |
| Whelping Difficulty | Medium | Easy |
| Puppy Mortality Rate | Low | Low |
Physical Risks
| Risk | Chihuahua | Scottish Sheepdog Longhair |
|---|---|---|
| Bloat / GDV Risk | Low | High |
| Slippery Floor Risk | Low | Low |
| Min Fence Height | 1.5m | 1.3m |
| Dig / Escape Risk | Low | Low |
Health & Common Conditions
Chihuahua Health Issues
Scottish Sheepdog Longhair Health Issues
Chihuahua Suggested Tests
- Regular dental check-ups and cleanings
- Annual cardiac auscultation
- Orthopedic check for patellar luxation
Scottish Sheepdog Longhair Suggested Tests
- MDR1 (DNA) - CRITICAL
- CEA (DNA + Clinical Exam at 6-8 weeks)
- PRA-rcd2 (DNA)
- Hip Evaluation
Health Risk Overview
| Risk Factor | Chihuahua | Scottish Sheepdog Longhair |
|---|---|---|
| Cancer Risk | Medium | Low |
| Cardiac Risk | Low | Low |
| Neurological Risk | Low | Low |
| CCL/ACL Tear Risk | Low | Low |
| Vet Burden Tier | Medium | Medium |
Sensitivities & Allergies
| Sensitivity | Chihuahua | Scottish Sheepdog Longhair |
|---|---|---|
| Skin Allergies | ||
| Environmental Allergies | ||
| Stomach Sensitivity | Low | Low |
| Food Allergies | Generally hardy |
Health Maintenance
| Care Item | Chihuahua | Scottish Sheepdog Longhair |
|---|---|---|
| Nail Growth Rate | Normal | Normal |
| Eye Care Needs | Low | High |
| Anal Gland Issues | Occasional | Rare |
Senior Care & Aging
Chihuahua Senior Care
Common Senior Issues
- Arthritis
- Vision decline
- Cognitive changes
Senior care varies by individual health.
Scottish Sheepdog Longhair Senior Care
Common Senior Issues
- Arthritis in hips/knees
- Cognitive decline
- Vision problems (CEA progression)
High risk of arthritis - introduce ramps for cars early to protect joints. Keep mentally engaged with nosework to slow cognitive decline.
Grooming & Care
Chihuahua
low maintenanceScottish Sheepdog Longhair
high maintenanceLifestyle Compatibility
Chihuahua Daily Life
Scottish Sheepdog Longhair Daily Life
Housing & Legal Restrictions
| Restriction | Chihuahua | Scottish Sheepdog Longhair |
|---|---|---|
| BSL Restricted | ||
| Common Rental Ban | ||
| Insurance Blacklist | ||
| Weight Category | Under 50lbs | Over 50lbs |
Climate Tolerance
| Climate | Chihuahua | Scottish Sheepdog Longhair |
|---|---|---|
| Heat Tolerance | ||
| Cold Tolerance | ||
| Water Affinity | Medium | Low |
Travel Compatibility
| Activity | Chihuahua | Scottish Sheepdog Longhair |
|---|---|---|
| Car Travel | Good | Good |
| Camping | ||
| Beach Friendly | ||
| Hiking Rating | ||
| Cabin Flight Eligible | ||
| Hotel Friendly Size |
Niche Suitability
| Role | Chihuahua | Scottish Sheepdog Longhair |
|---|---|---|
| Service Dog | Low | Medium |
| Therapy Dog | Low | High |
| Deep Pressure Therapy | ||
| Canicross / Bikejoring | ||
| Apartment Adaptable | ||
| Tactile / Sensory Friendly | ||
| Livestock Guardian | ||
| Medical Alert | Low | Medium |
Costs & Expenses
Upfront Costs
| Cost | Chihuahua | Scottish Sheepdog Longhair |
|---|---|---|
| Purchase Price | N/A | $1,500-3,000 |
| Initial Cost Range | $1,000–$2,500 | $1,500–$3,000 |
| Cost Tier |
Ongoing Costs
| Cost | Chihuahua | Scottish Sheepdog Longhair |
|---|---|---|
| Monthly Range | $50–$110 | $150–$250 |
| Yearly Range | $600–$1,320 | $2,000–$3,000 |
| Food / Month | $20-50 | $60-90 |
| Insurance / Month | $30-60 | $40-70 |
| Grooming / Session | $0-50 | $80-150 |
| Vet Routine / Year | $20-50 | $600-1,000 |
| Monthly Cost Tier |
Chihuahua Lifetime Cost
N/A
Scottish Sheepdog Longhair Lifetime Cost
$25,000-40,000
Quirks & Fun Facts
Daily Quirks
| Quirk | Chihuahua | Scottish Sheepdog Longhair |
|---|---|---|
| Snoring | ||
| Flatulence | Occasional | Rare |
| Slobber Level | Low | None |
| Smell When Wet | Moderate | Moderate |
| Zoomies Frequency | Occasional | Weekly |
| Counter Surfing | ||
| Digging Tendency | Low | Low |
Scottish Sheepdog Longhair Quirks
The Collie Nose
They use their long nose to poke, prod, and nudge you - their way of holding hands
The Greeter's Grin
Some Collies 'smile' (bare their teeth) when submissive or happy. Looks terrifying to strangers but is a sign of joy.
Air Snapping
May snap the air when excited or playing
The Off Switch
Unlike Border Collies, Rough Collies have a distinct 'off switch' and are often described as couch potatoes indoors
Frequently Asked Questions
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