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Border Collie Size & Dimensions – How Big Are They?

Border Collies are considered a medium-sized dog breed.

Border Collie Size & Dimensions
Weight:14-20 kg (30-45 lbs).
Height:48-56 cm (19-22 inches).
Body Length:46-56 cm (18-22 inches).
Note: Body Length is measured from the base of the tail to the centre of the chest bone & Height is measured from the bottom of the foot to the top of the shoulder (Withers Height)

How Big Are Border Collies Compared to Other Breeds?

Border Collies fall within the medium size category, being larger than very small breeds like the Chihuahua or the Pomeranian, but smaller than larger breeds such as the Labrador Retriever or the German Shepherd. They share a similar size range with other medium-sized herding breeds like the Australian Cattle Dog and the Shetland Sheepdog. Despite their medium stature, Border Collies are renowned for their agility and athleticism, often outperforming larger breeds in various canine sports and activities.

How Much Variation in Size Is There Amongst Different Border Collies?

Variation in size among Border Collies is generally minimal, as they typically conform closely to the breed’s established standards regarding height and weight. However, individual differences may arise due to factors such as genetics, diet, and exercise levels. To determine if a Border Collie is at a healthy weight, one should be able to feel their ribs with gentle pressure, without them being overly prominent. Additionally, observing a visible waistline when viewed from above and a slight abdominal tuck from the side indicate a healthy weight. Regular exercise and a balanced diet are crucial for maintaining their overall health and weight within an optimal range.

When do Border Collies Stop Growing?

Border Collies are fully grown by the time they are around 12-18 months old. This means that any growth in height, weight, or length should have stopped by this time and they have reached their adult size. Before this time, a Border Collie is considered a puppy and their growth rate can vary significantly.

According to a study published in the Journal of Small Animal Practice, Border Collies reach 50% of their adult weight at around 14 weeks of age and 90% of their adult weight at around 9 months of age.

Can You Predict the Size of Border Collies When it is a Puppy?

It can be difficult to predict the exact size of a Border Collie when they are a puppy. However, you can estimate their size by looking at the size of their parents and their growth rate in the first few months of life. Generally, a larger puppy will grow up to be a larger adult dog.

When selecting a Border Collie puppy, it is important to choose one that is in proportion to its littermates and appears healthy. A reputable breeder should be able to provide you with information about the puppy’s parents and their size.

Essential Items Size Guide for Border Collie

ItemSize CategoryMeasurementWhy
CrateLarge91×58 cm (36×23 in)Provides enough room for movement and comfort during confinement or travel.
BedMedium/Large76×61 cm (30×24 in)Offers adequate space for the Border Collie to stretch out while resting or sleeping.
KennelLarge107×71 cm (42×28 in)Provides a spacious and secure outdoor shelter for the dog to seek refuge and rest comfortably.
CollarMedium/Large35-45 cm (14-18 in)Fits comfortably around the Border Collie’s neck, providing secure leash attachment and identification.

Border Collie Size & Dimensions – How Big Are They?