Herding & Companion · Herding Dogs
Rough Collie
Also known as: Long-haired Collie, Lassie Collie
A medium-large, long-coated British herding breed made famous by 'Lassie.' The Rough Collie is generally gentle, biddable and family-oriented, with a sensitive temperament. Its herding heritage shows in movement sensitivity and a need for daily engagement and coat care.
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Quick Facts
Best Suited For
Active, gentle homes committed to grooming
Exercise
Moderate to high
Grooming
High
Shedding
Heavy (seasonal)
Trainability
Highly trainable
Experience Level
Suitable for committed owners
At a Glance
At a Glance
- Size category
- Large
- Original purpose
- Herding sheep
- Country / region of origin
- Scotland / Northern England
- Height range
- 51–66 cm (20–26 in)
- Weight range
- 18–34 kg (40–75 lb)
- Life expectancy
- 12–14 years
- Coat type
- Long double coat with mane
- Recognized colours
- Sable and white, tricolour, blue merle
- Exercise commitment
- Moderate to high
- Mental-work commitment
- High
- Training commitment
- High
- Grooming commitment
- High maintenance
- Shedding tendency
- Heavy (seasonal)
- First-time-owner considerations
- Active homes committed to grooming; suburban or rural with space
Ranges and tendencies vary by sex, line, registry, and individual dog. Descriptive labels are used instead of scores or rankings.
Original Purpose
Original Purpose
Herding sheep; later companion and show roles
What People Often Love
What People Often Love
- Gentle, biddable temperament
- Family-oriented and devoted
- Intelligence and trainability
- Generally good with respectful children
- Distinctive long coat and appearance
- Responsive to reward-based handling
What Can Be Difficult
What Can Be Difficult
- High grooming commitment — the long coat needs significant care
- Heavy shedding, especially seasonally
- Movement sensitivity — may chase moving things
- Stranger reserve that can become shyness without socialization
- Sound sensitivity in some individuals
- Health concerns, particularly eye and MDR1 issues
- Sensitive temperament may not suit harsh handling
Breed Gallery
Rough Collie visual guide
Adult Comparison — Male & Female
Life Stages — Puppy, Adolescent, Mature Adult

Puppy
Eight-week-old Rough Collie puppy; reusable Commons license recorded on the file page.
Recognized Colours

Blue merle coat
Blue merle Rough Collie puppy; CC BY 2.0, attribution required.
Photos are for educational reference only. Individual dogs vary. Rare or non-standard colours do not indicate better health, value, or quality.
Life Stages
Life stages
Puppy
Puppies need dedicated exposure and foundation training. Introduce handling and grooming early.
Adolescent
Adolescence (6–18 months) often brings high energy and testing. Coat care demands increase.
Adult
Adults (2+ years) typically mature into gentle, steady patterns. Grooming remains a significant commitment.
Senior
Joint and eye care become central. Keep gentle activity and mental engagement.
Colours and Coat
Colours and coat
- Recognized colours
- Sable and white, tricolour, blue merle
- Coat length
- Long
- Coat texture
- Double coat with mane
- Undercoat
- Yes
- Seasonal changes
- Heavy seasonal shedding
- Grooming notes
- Several hours of brushing per week. Prone to matting behind ears and in feathering.
Merle patterning is normal. Two merle parents can produce double-merle puppies with health issues — responsible breeders avoid this.
Male vs Female
Male vs Female
| Field | Male | Female |
|---|---|---|
| height | 56–66 cm | 51–61 cm |
| weight | 23–34 kg | 18–25 kg |
| build | Heavier and more substantial | Lighter and more refined |
| maturity | May mature slightly later | Often matures earlier |
| Visible sexual dimorphism | Noticeable | Noticeable |
Temperament differences between individual dogs are generally more important than sex alone.
Appearance Variation
How Rough Collie can vary in appearance
Rough Collie does not have a single widely recognized working-vs-show line division, but appearance still varies by individual. Verified breed-typical details:
- Coat: Long double coat with mane.
- Recognized colours: Sable and white, tricolour, blue merle.
- Typical height: 51–66 cm (20–26 in).
- Typical weight: 18–34 kg (40–75 lb).
Individual dogs vary by sex, line, registry and development. None of these variations indicate better health, value or quality.
Breed Overview
The Rough Collie is a medium-large, long-coated British herding breed, made famous by 'Lassie.' Bred to herd sheep across Scottish and northern English terrain, the breed combines a gentle, biddable temperament with herding intelligence and a distinctive long coat. Rough Collies are generally family-oriented and sensitive, with movement sensitivity and a need for daily engagement and coat care.
Original Purpose and Development
The Rough Collie was developed in Scotland and northern England to herd and guard sheep. Selection favoured intelligence, responsiveness, stamina and the coat to work in harsh weather. Queen Victoria's interest helped popularize the breed, and 'Lassie' cemented its public image. The breed split into rough and smooth coat varieties. Those herding instincts remain present in modern dogs.
Typical Temperament
Typical Rough Collies are gentle, biddable, sensitive and family-oriented. They tend to be devoted to family and reserved rather than aggressive with strangers. Many are responsive and cooperative. The breed's sensitivity means harsh handling can damage trust. Individual variation by line and development is significant.
Energy and Exercise Needs
Rough Collies need daily physical exercise and benefit from outlets that use both body and mind. They are moderate-to-high energy. Exercise alone does not produce a calm dog; mental engagement and trained rest matter equally.
Mental Work and Training Needs
Rough Collies are intelligent and want to engage; without daily mental engagement they can become restless or develop problem behaviours. Mental work includes training, problem-solving and structured engagement. The breed's biddability makes mental work rewarding to provide.
Trainability and Handler Considerations
Rough Collies are trainable and generally thrive with reward-based handling. Their sensitivity means harsh handling can damage trust and create anxiety. Key training themes include impulse control, recall, settle behaviour and confidence building.
Sociability With People
Rough Collies typically bond closely with family and are reserved with strangers. Socialization matters so reserve does not become shyness. Stranger neutrality is a reasonable goal.
Children and Household Life
Rough Collies can live well with children when raised with them and managed appropriately. They are generally good with respectful children. Supervision around young children matters. No breed should be left unsupervised with young children.
Other Dogs and Other Animals
Rough Collies can live well with other dogs and animals when socialized and managed. The breed's herding heritage can produce chase behaviour that needs outlets.
Prey Drive, Chasing and Movement Sensitivity
Rough Collies have moderate herding drive and movement sensitivity — they may chase moving things. Management includes training recall and neutrality and providing appropriate outlets.
Grooming, Shedding and Coat Care
The long double coat with its distinctive mane requires significant grooming — several hours of brushing per week, especially during seasonal shedding. The coat is prone to matting behind the ears and in the feathering. Nail care, ear cleaning and dental care are standard. Shedding is heavy seasonally.
Common Health Considerations
Commonly discussed health concerns include collie eye anomaly, progressive retinal atrophy, the MDR1 gene mutation (drug sensitivity), dermatomyositis and bloat (gastric dilatation-volvulus). Responsible breeding with health screening is important. This information is educational, not diagnostic. Always consult a qualified veterinarian.
Housing and Lifestyle Fit
Rough Collies generally suit suburban or rural homes with secure outdoor space and engaged owners willing to commit to grooming. Apartment living is possible with dedicated management. The grooming commitment must be honestly assessed.
Academy Takeaway
The Rough Collie is a gentle, biddable herding breed whose long coat adds significant maintenance demands. It rewards engaged, sensitive ownership. Tendencies are not guarantees — evaluate the breeder, the parents and the individual.
Choosing a Breeder
- What health testing has been done on the parent dogs?
- What is the temperament of the parent dogs?
- What lines are the parents from, and what traits were selected for?
- How are puppies socialized and raised?
- How are puppies matched to homes?
- What support is provided after placement?
- What is the return policy if the placement does not work?
- Why was this specific breeding planned?
Choosing a Rescue or Adult Dog
- What is known about the dog's history?
- What has the foster home observed about behaviour?
- How does the dog behave around dogs, cats, and children?
- What medical information is available?
- Is behaviour support available during adjustment?
- What is the trial or return policy?
- What adjustment period should be expected?
Before You Bring One Home
Before you bring one home
Use these questions as a reality check before choosing this breed. There are no perfect answers, but honest answers can help you decide whether the breed's needs, tendencies and long-term responsibilities fit your life.
- Can I commit to several hours of grooming per week for 10+ years?
- Can I provide daily physical and mental engagement?
- Am I comfortable with heavy seasonal shedding?
- Have I researched health screening — eyes, MDR1 — rather than trusting verbal claims?
- Is my household calm enough for a sensitive breed?
Similar Breeds
Similar breeds to explore
Frequently Asked Questions
Rough Collie — common questions
Sources and Review
Sources and review status
Last reviewed: July 2026
Academy editorial review: Approved
Hero image replaced with a breed-specific Unsplash image whose source page explicitly identifies the breed and states it is free to use under the Unsplash License. Gallery includes source-verified adult, puppy and appearance/coat examples. Source panel verified against the Collie Club of America, FCI Collie Rough Standard No. 156, AKC breed guidance and the Collie Health Foundation's testing guidance; further gallery expansion remains optional.
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Collie Club of America
breed club
Fédération Cynologique Internationale (FCI) — Collie Rough, Standard No. 156
kennel club
American Kennel Club (AKC) — Collie
kennel club
Collie Health Foundation — Test Your Collie
health
Sources are being verified. No citation is presented as confirmed until review is complete. Always consult qualified professionals for breed-specific and health advice.
Last reviewed: July 2026
Reviewed by: The Academy Editorial Team
This guide describes common breed traits, historical purpose and practical ownership considerations. Individual dogs vary according to genetics, health, early development, environment, training and life experience.
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