The Rough Collie, often lovingly known as the "Lassie" dog after the iconic TV character, is a medium to large breed originally bred in Scotland for herding livestock. They are recognized by their long, thick double coat and striking appearance, which often makes them appear larger than they truly are. Males generally stand up to 26 inches tall at the shoulder and weigh up to 75 pounds, while females are typically a bit smaller.
Maintaining the health of their dense coat requires consistent grooming and brushing to prevent matting, including caring for the thick undercoat. Rough Collies come in a variety of colors, such as tricolor, sable, merle, double merle, and mahogany sable, with some variations within each shade.
If you’re thinking about adding a Rough Collie to your family, it’s vital to understand their health profile — especially hereditary health concerns — and the importance of genetic testing to ensure responsible ownership and ethical breeding.
Rough Collies generally live between 12 and 15 years, which is a strong lifespan for a dog their size. Like many purebred dogs, however, they are prone to specific inherited conditions that all owners and breeders should keep in mind.
The Rough Collie breed has a relatively high inbreeding coefficient of about 14.3%, indicating considerable relatedness among their lineage. This can increase the chance of inherited health issues. Ideally, breeders aim to reduce this number closer to 6.25% or lower, preserving genetic diversity and overall breed health.
This breed carries particular hereditary conditions, but fortunately, genetic screenings exist to identify and help reduce associated health risks.
American authorities including the American Kennel Club (AKC) and US breed clubs recommend the following genetic and health evaluations before breeding:
Besides these testable inherited conditions, Rough Collies may face additional health issues that owners should monitor:
Thanks to their thick double coat, Rough Collies can have difficulty regulating their body temperature during hot weather. Owners in warmer US regions should ensure dogs have plenty of shade and fresh water and avoid intense heat exposure. Regular grooming aids coat health and helps maintain proper airflow to assist with temperature control.
When looking for Rough Collie puppies, choosing a reputable American breeder who conducts and shares documentation of recommended genetic testing is essential. This helps reduce hereditary health problems and supports the breed’s overall welfare.
A trustworthy breeder will openly discuss health risks, provide clear test results, and assist with your puppy’s care needs.
For anyone passionate about bringing a Rough Collie into their home, being informed about hereditary health risks and the vital role of genetic health screening is a must. Proper grooming, heat management, and regular veterinary checkups also form part of conscientious care for this lovely breed.
Genetic testing geared toward MDR1, PRA, and CEA, combined with orthopedic and thyroid evaluations, provides powerful tools to protect the breed’s future. Partnering with responsible US breeders ensures ethical breeding and healthier Rough Collies for generations ahead.