Collie Weight & Growth Chart
Complete weight guide with growth charts for male and female Collies from puppy to adult.
Collie Weight Overview
Adult Collies typically weigh between 50 and 75 pounds, with males generally being larger than females. Males average 50–75 lbs while females typically weigh 42–66 lbs.
Males weigh 60 to 75 pounds, females 50 to 65 pounds. They should appear elegant and well-proportioned. The abundant coat of the Rough variety can make them appear larger than they actually are..
Collie Growth Chart
When Does a Collie Stop Growing?
Most Collies reach adult height of 22–26 inches by 15–24 months, with full body weight of 50–75 lbs achieved shortly after. Males fill out to 75 lbs while females reach 66 lbs.
Growth rate is influenced by genetics, diet quality, and spay/neuter timing. Moderate exercise needs of about 60 minutes daily. They enjoy long walks, play sessions, and herding activities but do not demand the intense stimulation that Border Collies require..
Collie Male vs Female Size Differences
Male and female Collies differ noticeably in size, a pattern common in large breeds. Males typically weigh 50–75 lbs, while females weigh 42–66 lbs. Both sexes stand 22–26 inches tall at the shoulder, though males tend to fall at the upper end of this range.
These size differences can influence practical ownership decisions. Larger males require more food, larger crate sizes, and stronger leash handling. Female Collies at the lower weight range may be easier to manage physically for smaller handlers or families with children. Both sexes share the same temperament and health profile, so size preference should be a practical decision rather than a temperament-based one.
Is My Collie Overweight?
To determine if your Collie is at a healthy weight (50–75 lbs target):
- Rib test: You should be able to feel the ribs without pressing hard, with a thin layer of fat covering them
- Waist check: Viewed from above, there should be a visible waist behind the ribs
- Tuck-up: From the side, the abdomen should tuck up behind the rib cage
Their double coat, rough (long) or smooth (short) variety coat can mask weight gain, so hands-on assessment is essential. If your Collie is overweight, work with your veterinarian to develop a safe weight loss plan. Even a 10% reduction can reduce the risk of Collie Eye Anomaly and other conditions.
Collie Weight Management Tips
Maintaining your Collie at a healthy weight between 50 and 75 lbs is one of the most impactful things you can do for their long-term health. Studies consistently show that lean dogs live an average of 1.8–2.5 years longer than overweight dogs of the same breed.
Portion control: Use a measuring cup for every meal rather than estimating. Feed the amount recommended for your Collie's ideal weight, not their current weight if they are overweight. Divide daily food into two meals for adults and three meals for puppies under six months.
Treat management: Treats should not exceed 10% of daily caloric intake. Use small, low-calorie training treats and consider using pieces of your dog's regular kibble as rewards during training sessions. Avoid table scraps entirely, as they add unpredictable calories and can introduce foods that are toxic to dogs.
Exercise alignment: With an exercise needs rating of 3/5, the Collie requires moderate daily exercise. Balance food intake with activity level, adjusting portions during periods of reduced activity such as recovery from illness or injury.
Regular weigh-ins: Weigh your Collie monthly and track the trend. Gradual weight gain of even one to two pounds per month can lead to significant obesity over time. Your veterinarian can establish your dog's ideal weight during wellness visits and recommend caloric adjustments as needed.
Feeding Recommendation
An adult Collie's daily food intake is typically 0.8–1.5 cups of high-quality kibble, fed in two meals. Males weigh 60 to 75 pounds, females 50 to 65 pounds. They should appear elegant and well-proportioned. The abundant coat of the Rough variety can make them appear larger than they actually are.. At 50–75 lbs with energy level 3/5, a joint-supporting formula is recommended for this large-sized herding breed.
Collie Weight by Age Table
The following table shows expected weight ranges for male and female Collies at key developmental milestones. Individual dogs may fall slightly outside these ranges depending on genetics, nutrition, and activity level. Consult your veterinarian if your Collie's weight deviates significantly from these benchmarks.
| Age | Male (lbs) | Female (lbs) |
|---|---|---|
| 3 months | 13.6–16.4 | 11.5–14.0 |
| 6 months | 30.5–37.0 | 25.9–31.5 |
| 9 months | 44.1–53.4 | 37.4–45.5 |
| 12 months | 54.3–65.7 | 46.0–55.9 |
| 18 months | 64.5–78.0 | 54.7–66.4 |
| 24 months | 67.9–82.1 | 57.6–69.9 |
Health Risks of Incorrect Weight in Collies
Both underweight and overweight conditions pose serious health risks for the Collie. Understanding these risks reinforces the importance of maintaining your dog within the 50–75 lb target range.
Overweight risks: Excess weight places additional strain on joints, increasing the risk and severity of conditions like Collie Eye Anomaly. Overweight Collies also face higher rates of diabetes, heart disease, respiratory compromise, heat intolerance, and reduced lifespan. Even moderate excess weight, just 10–15% above ideal, shortens life expectancy and reduces quality of life.
Underweight risks: A Collie consistently below 50 lbs may be experiencing inadequate nutrition, parasitic infection, dental problems that prevent eating, or underlying illness. Underweight dogs have weakened immune systems, poor coat quality, reduced energy, and slower healing. If your Collie appears thin despite normal feeding, veterinary examination is essential to rule out medical causes.
Frequently Asked Questions
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