A graceful, devoted herder made famous by Lassie.
Origin
United Kingdom (Scotland)
Height
22–26 in (56–66 cm)
Weight
50–75 lb (23–34 kg)
Lifespan
12–14 years
Coat
Rough (long) or smooth double coat
Energy
Moderate
Overview
The Collie is an elegant, intelligent herding breed known worldwide through the fictional Lassie. Graceful and sensitive, it was bred to herd sheep in the Scottish Highlands and combines beauty with a famously gentle, loyal disposition.
Devoted, responsive, and good-natured, the Collie is exceptionally family-oriented and known for its affinity with children. It is trainable and eager to please, thriving on companionship and moderate activity in an involved household.
History
Developed as a Scottish and northern English herding dog, the Collie rose to fame in the 19th century, championed by Queen Victoria, and later became a cultural icon. Both rough and smooth coat varieties share the same gentle heritage.
Where it comes from
United Kingdom (Scotland)
Highlighted in the Collie's lineage color on the map.
Temperament
The Collie is affectionate, trainable, and attuned to its family, generally excellent with children and other animals. It is sensitive and can be vocal, responding best to gentle, positive methods and plenty of companionship.
Health to watch
This inherited eye disorder is common in the breed; genetic testing and eye exams identify affected dogs early.
A gene variant makes many Collies sensitive to certain drugs; a DNA test guides safe medication choices.
Joint malformation occurs in the breed; screening and lean weight help protect the hips over time.
General breed tendencies, not a diagnosis. Every dog is an individual — pair this with regular veterinary care.
Care essentials
The rough coat needs brushing several times a week; even the smooth variety benefits from weekly grooming.
Moderate daily activity and mental engagement keep this intelligent herder content.
Collies are family-focused and dislike isolation, thriving as involved household members.
XPET builds each pet a digital twin — modeling their real biology instead of breed averages, so care stays personal.