Mastiff vs Scottish Terrier
A side-by-side comparison to help you find the right breed for your lifestyle.
Mastiff
Also known as: English Mastiff, Old English Mastiff
The Mastiff (English Mastiff) is a giant guardian breed of immense dignity, courage, and docility. With ancestors depicted in Assyrian bas-reliefs from 2500 BC, these ancient war dogs and estate guardians have been bred down to gentle family companions. But the reality of living with a dog that can exceed 200lbs is often romanticized - between the short 6-10 year lifespan, potential for bone cancer, and costs that dwarf most breeds, they're called a 'heartbreak breed' for good reason.
Extra Large
Low
6-10 yrs
70-76+ cm
70-104+ kg
Scottish Terrier
The Scottish Terrier, affectionately known as the \\\"Scottie,\\\" is a small, sturdy breed recognized for its distinctive wiry coat, bushy eyebrows, and dignified demeanor. Known for their independence and spirited nature, Scotties are loyal companions with a rich history as tenacious hunters.
Medium
Medium
10-12 years yrs
N/A
Quick Comparison
| Trait | Mastiff | Scottish Terrier |
|---|---|---|
| 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 | Mastiff | Scottish Terrier |
|---|---|---|
| Size | Extra Large | Medium |
| Energy Level | Low | Medium |
| Grooming | High | High |
| Trainability | challenging | challenging |
| Barking Level | Medium | High |
| Shedding Level | Medium | Low |
| Chew strength | Hard | Light |
| Housing | Yard | Apartment |
Owner Fit & Decision Guide
Owner Match
| Trait | Mastiff | Scottish Terrier |
|---|---|---|
| Experience Level | Advanced | Experienced |
| First-Time Owner | ||
| Ideal Owner | Experienced large breed owner with house and yard. Works from home or can be home most of the day. Financially prepared for $3,000+ annual costs and $5,000+ emergency fund. Physically able to manage 200lb dog. Psychologically prepared for 6-10 year lifespan and likely cancer diagnosis. | Active individual or family who can provide adequate exercise and training for a Scottish Terrier. |
Mastiff Dealbreakers
- Apartment living (unless ground floor and extremely dedicated)
- Fastidious cleaners (drool/hair is unmanageable)
- Tight budget (one vet bill can bankrupt you)
- Physically frail owners (cannot hold 200lb dog on leash)
- Cannot emotionally handle short lifespan
Scottish Terrier Dealbreakers
- Cannot meet 45-60 min daily exercise
- Cannot commit to grooming needs
Surrender Risk
| Factor | Mastiff | Scottish Terrier |
|---|---|---|
| Risk Level | Medium | Medium |
| Primary Reasons | 'Moving/Housing Restrictions' - landlords evict due to size/breed, Cost - giant breed vet bills shock unprepared owners, Cute puppy becomes 150lb adolescent they can't afford to feed or vet | Underestimated exercise needs, Behavioral challenges, Cost of care |
Temperament & Personality
Behavior Comparison
| Trait | Mastiff | Scottish Terrier |
|---|---|---|
| Prey Drive | ||
| Watchdog Ability | ||
| Stranger Friendly | ||
| Drool Level | ||
| Wanderlust |
Vocalization
| Trait | Mastiff | Scottish Terrier |
|---|---|---|
| Barking Level | Medium | High |
| Howling Tendency | ||
| Whining Tendency | Low | Low |
| Separation Vocalization |
Safety & Reliability
| Trait | Mastiff | Scottish Terrier |
|---|---|---|
| Escape Artist | ||
| Dog Park Suitable | ||
| Off-Leash Reliable | ||
| Small Animal Safe | ||
| Leash Reactivity | ||
| Resource Guarding Risk | Moderate | Low |
Mastiff Social Traits
High
Same-sex aggression can develop around 18-24 months. Socialization critical to prevent wariness becoming fear-aggression.
Scottish Terrier Social Traits
Moderate
Selective
Training
Mastiff
- Ask once, then lure/help them succeed
- Train for partnership, not just obedience
- Start leash manners EARLY before they're physically unmanageable
- Use high-value treats - they are food motivated
Scottish Terrier
- ** Positive reinforcement is the only viable path. Harsh corrections will cause a Scottie to shut down or retaliate.
Mastiff Considerations
Average lifespan is only 6-10 years, with 8 being the median. Owners must be psychologically prepared to lose their companion just as they enter their senior years. Bone cancer is the leading cause of death.
Unlike eager-to-please breeds, Mastiffs often ask 'Why?' before complying. When they decide not to cooperate, they simply flatten themselves to the floor - physically unmanageable at 200lbs. Harsh training causes complete shutdown.
Mature Mastiffs can develop intolerance toward dogs of the same sex, typically emerging around 18-24 months. Difficult to manage due to sheer power differential between owner and dog.
$150-300/month for food alone. Insurance $100-200+/month. All medications priced by weight (3-4x cost of Labrador). A single emergency can exceed $5,000. If this would bankrupt you, do not get this breed.
Scottish Terrier Considerations
Unlike the Golden Retriever or Labrador, the Scottie does not live to please you. They are famously independent thinkers. If you call a Scottie, they may consider the request, evaluate what’s in it for them, and then decide whether to comply. This is often misinterpreted as "stubbornness," but it is actually a feature of a breed designed to work alone underground without human direction.
Scotties are naturally suspicious of strangers and other dogs. They have a low tolerance for handling they deem disrespectful, which can include hugging, ear pulling, or sudden movements. This makes them a (under 8-10 years old). They are quick to correct perceived rudeness with a snap.
Many Scotties, particularly males, can be intolerant of other dogs of the same sex. This aggression often emerges at social maturity (18-24 months) and can escalate to serious fighting if not managed.
Their prey drive is not a game; it is a kill instinct. They cannot be trusted around small pets like hamsters, rabbits, or birds.
Multi-Species Compatibility
| Species | Mastiff | Scottish Terrier |
|---|---|---|
| With Cats | Generally safe if raised together - low prey drive | Caution - may chase |
| Small Mammals | Generally safe - no terrier-like kill instinct | Supervision required |
| Birds / Reptiles | Generally neutral | Caution advised |
Advanced Behavior
| Trait | Mastiff | Scottish Terrier |
|---|---|---|
| Predatory Sequence Risk | Arrested | Medium |
| Biddability | Low | Low |
| Noise Sensitivity | Low | Low |
| Territorial Barking | ||
| Same-Sex Aggression Onset | 18 months | 18 months |
Mastiff: Predatory sequence arrested: Orient -> Eye -> (Stalk/Chase/Grab/Kill inhibited). They may chase out of territorial instinct but lack 'kill bite' of terriers. High adaptive intelligence (problem-solving), low working intelligence (obedience repetition). They work for partnership, not just kibble.
First Year & Life Stages
First Year Challenges
| Challenge | Mastiff | Scottish Terrier |
|---|---|---|
| Puppy Difficulty | ||
| Destructive Phase | 6-18 | 6-18 |
| House Training | Medium | Moderate |
| Crate Training | Medium | Medium |
| Adolescent Regression |
Mastiff: Calmer than sporting/herding breeds but 6-month puppy can weigh 80lbs with baby brain. They are clumsy, mouthy, and accidentally knock over children/furniture. Teething Mastiff can chew through solid wood door frames. A rebellious 150lb teenager pulling on leash is a safety hazard.
Scottish Terrier: Scottish Terrier puppies require consistent training and patience.
Life Stages Timeline
| Stage | Mastiff | Scottish Terrier |
|---|---|---|
| Puppy Phase | 18 months | 12 months |
| Adolescence | 18-36 | 6-18 |
| Adult Years | 3-6 | 2-8 |
| Senior Onset | ~6 years | ~8 years |
| Peak Energy Age | 1-2 years | 1-3 years |
Size & Physical Characteristics
Physical Stats
| Measurement | Mastiff | Scottish Terrier |
|---|---|---|
| Height | 70-76+ cm | N/A |
| Weight | Not enough data yet | Not enough data yet |
| Size Category | Extra Large | Medium |
| Lifespan | 6–10 years | 10–12 years |
| Litter Size | 8-10 | 4-8 |
Mastiff Coat
Scottish Terrier Coat
Lineage & Origin
| Detail | Mastiff | Scottish Terrier |
|---|---|---|
| Original Purpose | War dogs, guardians, and hunters of large game (lions, bears, wolves). In England, estate guardians protecting from poachers. Job was to seize and hold intruders using sheer mass. | Developed in the Scottish Highlands, the Scottie was bred to hunt badger, fox, and otter |
| Origin | Ancient breed - ancestors depicted in Assyrian bas-reliefs from 2500 BC | N/A |
Breeding Details
| Detail | Mastiff | Scottish Terrier |
|---|---|---|
| C-Section Rate | High | Varies |
| Whelping Difficulty | High | Medium |
| Puppy Mortality Rate | Moderate | Low |
Physical Risks
| Risk | Mastiff | Scottish Terrier |
|---|---|---|
| Bloat / GDV Risk | High | Low |
| Slippery Floor Risk | High | Low |
| Min Fence Height | 1.8m | 1.5m |
| Dig / Escape Risk | Low | Low |
Health & Common Conditions
Mastiff Health Issues
Scottish Terrier Health Issues
Mastiff Suggested Tests
- PRA (Progressive Retinal Atrophy)
- Cystinuria DNA test
- DM (Degenerative Myelopathy)
- OFA or PennHIP for hips and elbows
- Cardiac evaluation
Scottish Terrier Suggested Tests
- Genetic Testing for vWD and CMO
- Annual or bi-annual ultrasound screening for bladder tumors starting at age 7-8
Health Risk Overview
| Risk Factor | Mastiff | Scottish Terrier |
|---|---|---|
| Cancer Risk | Very High | Medium |
| Cardiac Risk | Medium | Low |
| Neurological Risk | Low | Low |
| CCL/ACL Tear Risk | High | Low |
| Vet Burden Tier | Very High | Medium |
Sensitivities & Allergies
| Sensitivity | Mastiff | Scottish Terrier |
|---|---|---|
| Skin Allergies | ||
| Environmental Allergies | ||
| Stomach Sensitivity | Medium | Low |
| Food Allergies |
Health Maintenance
| Care Item | Mastiff | Scottish Terrier |
|---|---|---|
| Nail Growth Rate | Fast | Normal |
| Eye Care Needs | Medium | Low |
| Anal Gland Issues | Occasional | Occasional |
Senior Care & Aging
Mastiff Senior Care
Common Senior Issues
- Bone cancer (osteosarcoma)
- Arthritis (almost guaranteed)
- Heart issues
Rapid decline often starts around 6 years. May need 'Help 'Em Up' harness to assist standing. Euthanasia at home recommended if possible - transporting non-ambulatory 200lb dog to vet clinic is physically impossible for most owners without stretcher and team.
Scottish Terrier Senior Care
Common Senior Issues
- Arthritis
- Vision decline
- Cognitive changes
Senior care varies by individual health.
Grooming & Care
Mastiff
high maintenanceScottish Terrier
high maintenanceLifestyle Compatibility
Mastiff Daily Life
Scottish Terrier Daily Life
Housing & Legal Restrictions
| Restriction | Mastiff | Scottish Terrier |
|---|---|---|
| BSL Restricted | ||
| Common Rental Ban | ||
| Insurance Blacklist | ||
| Weight Category | Over 50lbs | Under 50lbs |
Climate Tolerance
| Climate | Mastiff | Scottish Terrier |
|---|---|---|
| Heat Tolerance | ||
| Cold Tolerance | ||
| Water Affinity | Low | Medium |
Travel Compatibility
| Activity | Mastiff | Scottish Terrier |
|---|---|---|
| Car Travel | Good | Good |
| Camping | ||
| Beach Friendly | ||
| Hiking Rating | ||
| Cabin Flight Eligible | ||
| Hotel Friendly Size |
Niche Suitability
| Role | Mastiff | Scottish Terrier |
|---|---|---|
| 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 | Mastiff | Scottish Terrier |
|---|---|---|
| Purchase Price | $1,500-4,000 | N/A |
| Initial Cost Range | $1,500–$4,000 | $1,000–$2,500 |
| Cost Tier |
Ongoing Costs
| Cost | Mastiff | Scottish Terrier |
|---|---|---|
| Monthly Range | $300–$600 | $80–$160 |
| Yearly Range | $3,600–$7,200 | $960–$1,920 |
| Food / Month | $150-300 | N/A |
| Insurance / Month | $100-200+ | N/A |
| Grooming / Session | $75-125 | $60-120 |
| Vet Routine / Year | $450-600 | N/A |
| Monthly Cost Tier |
Mastiff Lifetime Cost
$25,000-60,000
Scottish Terrier Lifetime Cost
N/A
Quirks & Fun Facts
Daily Quirks
| Quirk | Mastiff | Scottish Terrier |
|---|---|---|
| Snoring | ||
| Flatulence | Frequent | Occasional |
| Slobber Level | Heavy | Low |
| Smell When Wet | Strong | Moderate |
| Zoomies Frequency | Rare | Occasional |
| Counter Surfing | ||
| Digging Tendency | Low | Low |
Mastiff Quirks
The Mastiff Lean
Will lean their full weight (up to 200lbs) against your legs. Fall risk for children and elderly.
Ceiling Slobber
Not just when eating - they shake heads and 'fling' slime. It will be on clothes, walls, and TV.
Passive Resistance
When they don't want to do something, they simply flatten to the floor. Physically impossible to move a 200lb dog that doesn't want to move.
Room-Clearing Gas
Flatulence is frequent and potent, often clearing a room.
Frequently Asked Questions
Turn your dog into a brand deal.
Pet brands are looking for authentic creators — not celebrities. If you own a Mastiff or Scottish Terrier, 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 Mastiff with:
Compare Scottish Terrier with:
Based on comprehensive breed research data.