Use the Weight Tracker
How to Track Your Collie's Weight
Enter your Collie's current weight above to see whether they fall within the healthy range for the breed. Track your Collie's weight changes over time with reliable breed-standard benchmarks. Regular weigh-ins — at least once monthly for adults and weekly for puppies — are one of the best preventive health habits you can build.
The Collie is best known as Lassie, the fictional TV hero — and the real breed lives up to the legend. Originally bred in Scotland and Northern England as a sheepherding dog, Collies are highly intelligent, graceful, and deeply devoted to their families. They excel at obedience, agility, and herding trials. Their thick double coats require significant grooming maintenance. An important health note: many Collies carry the MDR1 gene mutation, making them sensitive to certain common drugs.
Healthy Weight Ranges for Collies
According to breed standards, a healthy adult Collie typically weighs:
Males: 60–75 lbs (27.2–34.0 kg)
Females: 50–65 lbs (22.7–29.5 kg)
These are reference ranges for adult dogs in good physical condition. Individual variation is normal — a muscular, athletic Collie may weigh more than average while still being perfectly healthy. Body condition score (visible ribs, waist tuck) matters more than the scale alone.
Signs Your Collie May Be Overweight
You should be able to feel your Collie's ribs easily without pressing hard, but they shouldn't be visually prominent. When viewed from above, their waist should be visible behind the ribcage. From the side, there should be a slight abdominal tuck. If ribs are hard to feel and there's no waist definition, your dog is likely overweight.
Common causes of weight gain in Collies include: too many treats, table scraps, insufficient exercise, age-related metabolic slowdown, and — in some cases — hypothyroidism. If your Collie gains weight despite normal eating habits, have your vet run a thyroid panel.
How Often Should You Weigh Your Collie?
Puppies: Weekly, to ensure healthy growth trajectory.
Adults: Monthly, or at every vet visit — whichever is more frequent.
Seniors (7+ years): Every 2–3 weeks, as metabolic changes and muscle loss can happen quickly.
Frequently Asked Questions
Q: My Collie weighs more than the range — is that a problem?
A: Not necessarily. Working dogs, highly muscular individuals, and large-framed dogs can exceed standard weight ranges while remaining healthy. Ask your vet to assess body condition score alongside weight.
Q: How fast should my Collie lose weight if overweight?
A: Aim for 1–2% of body weight loss per week — any faster risks muscle loss and nutrient deficiencies. For a 67-lb Collie, that's about 1.0–1.3 lbs per week.
Disclaimer: Weight tracking provides general guidance. Consult your veterinarian for a personalized assessment.