Large breed

Collie Weight Chart & Growth Guide

Updated weekly

Collies should grow into elegant, capable herding companions rather than bulky dogs. This guide pairs the weight chart with coat type, moderate daily exercise, sensitive training, Collie eye anomaly context, MDR1 medication awareness, skin and coat care, and meal timing for a deep-bodied large breed.

A Collie should feel athletic under the coat, with enough condition for work and enough leanness for clean movement.

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Collie puppy for the Collie weight chart and growth guide

Overview

Life Span

Adult range

23-34 kg

50.7-75 lb

Size class

Large breed

Matched size chart

Growth pace

Slower

Typical for this breed size

Check-in cadence

Weekly to monthly

Suggested rhythm

<16 w weekly | 16-32 w biweekly | 32 w+ monthly

Weight by age

Collie Weight Chart by Age

Collies are large herding dogs. Many males fall around 60-75 lb, while many females fall around 50-65 lb.

Use this chart with coat-aware body checks. A Collie should look graceful, not padded, and should move easily.

AgeMale WeightFemale Weight
2 months10-16 lb (4.5-7.3 kg)8-14 lb (3.6-6.4 kg)
3 months18-28 lb (8.2-12.7 kg)15-25 lb (6.8-11.3 kg)
4 months28-40 lb (12.7-18.1 kg)23-35 lb (10.4-15.9 kg)
5 months37-50 lb (16.8-22.7 kg)31-44 lb (14.1-20 kg)
6 months44-58 lb (20-26.3 kg)37-52 lb (16.8-23.6 kg)
8 months52-68 lb (23.6-30.8 kg)43-60 lb (19.5-27.2 kg)
10 months58-73 lb (26.3-33.1 kg)48-64 lb (21.8-29 kg)
12 months60-75 lb (27.2-34 kg)50-65 lb (22.7-29.5 kg)
18 months60-75 lb (27.2-34 kg)50-65 lb (22.7-29.5 kg)

Maturity

When Does a Collie Stop Growing?

Collies often reach much of their height around the first year, then continue filling into adult muscle, coat, and stamina.

2-5 months

Herding frame begins

Legs, body length, and coordination change quickly.

5-10 months

Coat and stamina build

Exercise needs rise, but growth should remain controlled.

10-15 months

Adult outline

Height and silhouette look mature while muscle and coat continue developing.

15-24 months

Condition finish

Adult routine shapes stamina, coat, and lean condition.

Key takeaway

Elegant growth beats heavy growth.

The best Collie trend protects movement, coat health, and long-term comfort rather than pushing size.

Growth check

Signs Your Collie Is Growing Well

A healthy Collie puppy should be alert, responsive, comfortable moving, and lean under the coat.

Positive signs

  • Ribs can be felt under the coat without hard pressure.
  • Waist and tuck are visible or easy to find.
  • Movement is light, coordinated, and comfortable.
  • Eyes look clear and the dog navigates confidently.
  • Coat and skin stay clean without mats, sores, or heavy itching.

Worth monitoring

  • Rough coat hides weight gain or rib loss.
  • Vision confidence changes or eyes look abnormal.
  • A medication reaction concern appears after treatment.
  • Retching without vomit, pacing, drooling, or belly swelling appears.
  • Limping, stiffness, or poor recovery follows normal exercise.

Collie note

Breed-aware records help.

Eye history and MDR1 status are useful context to keep alongside normal growth notes.

Weight factors

What Affects a Collie's Weight?

Collie weight is shaped by sex, coat type, herding activity, food portions, eye health, medication sensitivity, digestion, and large-breed growth pace.

Sex

Males are often heavier

Adult males commonly carry more size, while females often stay lighter.

Coat

Rough and smooth coats differ

Rough coats can hide condition, while smooth coats reveal changes sooner.

Activity

Herding-dog stamina

Daily movement and training help preserve muscle without overfeeding.

Eyes

Collie eye context

Vision changes can affect confidence and activity.

MDR1

Medication sensitivity records

Ask your vet about MDR1 testing and note medication reactions.

Meals

Deep-body meal timing

Use calm feeding routines and watch for urgent bloat signs.

Breed snapshot

Why this breed needs context

Collie puppy body condition snapshot for growth tracking
Steady large-breed pace<16 w weekly | 16-32 w biweekly | 32 w+ monthly

Temperament profile

Gentle • Responsive • Family-friendly

Collie dogs are usually gentle and responsive, and their larger frame is easiest to read when meals, activity, and weigh-ins stay steady.

Daily rhythm

Medium energy, High grooming

Use calm consistency, measured activity, and coat-aware body-condition checks.

Weight-tracking note

Best read through repeat check-ins

Full rough coat can hide rib and waist changes

Updated weeklyPlanning estimates onlyView sourcesEditorial policy

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Calculator

Run a live estimate

Open the homepage calculator with Collie selected and compare the live result with this guide.

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Size chart

Open the matching size chart

Use the Large size chart to compare the broader checkpoint range behind this breed guide.

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Guide

Read healthy weight basics

Review the core framework for trend tracking, body condition, and using ranges responsibly.

Open guide

Related guides

Read this Collie chart with supporting context

Age guide

Puppy weight chart by age

Compare Collie checkpoints with month-by-month puppy growth context before reading the breed graph.

Open age guide

Condition

Body condition score guide

Use rib, waist, and tuck checks to decide whether Collie's number looks healthy in real life.

Open condition guide

Large growth

Large breed puppy growth

Use slow-growth context for Collie's frame, food routine, and exercise plan.

Open large guide

Maturity

When dogs stop growing

Compare Large growth timing with the point when height, muscle, and fill-out usually slow.

Open timing guide

Growth

Collie Growth and Weight Chart

Growth graph

Collie growth chart

Use this large herding-dog reference to compare Collie growth from 1 to 12 months.

Breed-specific monthly chart

Chart span

1-12 months

Breed-specific monthly view

Male at 12 months

33 kg

72.8 lb

Female at 12 months

28.8 kg

63.5 lb

Re-check cadence

2-4 weeks

Trend beats one weigh-in

Monthly reference 1-12 months
Collie growth chart Breed-specific growth chart for Collie from 1 through 12 months in kg.010203040123456789101112 Typical male path Typical female path Age (months) Weight (kg)
Male line Female line

This breed-specific chart tracks the average monthly line for male and female Collie puppies from 1-12 months. Steady progress matters more than one weigh-in.

Calculator bridge

Want a live estimate from your dog's current age and weight?

Open the homepage calculator with Collie selected, add the latest weigh-in, then compare the result back against this guide.

Estimate Collie

What this means

How to read this graph for Collie

  • Use the male line for male puppies and the female line for female puppies, because Collie dogs often grow at different rates through the first year.
  • Month-to-month progress matters more than one high or low weigh-in, especially during the faster early-growth months.
  • Use the live calculator after repeat weigh-ins, then compare the result back to this breed-specific chart to confirm the trend is still moving steadily.

When to re-check

<16 w weekly | 16-32 w biweekly | 32 w+ monthly

Re-check a Collie every 2 to 4 weeks during growth, and sooner if exercise, food, coat condition, eye signs, or medication changes.

Next action

Run the live estimate with this breed selected

Most useful after a fresh weigh-in, then compare the result back against this breed graph and the matching size chart.

Estimate this breedOpen size chart

Stages

Collie Growth Stages Explained

Collie growth combines large-breed structure, responsive training, coat care, eye awareness, and steady herding-dog activity.

Birth - 8 weeks

Breeder foundation

Early growth, eye history, feeding, and handling records help shape expectations.

2 - 5 months

Social and frame growth

Build meals, brushing, leash skills, and gentle confidence.

5 - 10 months

Adolescent herder

Energy rises, coat changes, and training needs consistency without overwork.

10 - 15 months

Adult outline

Height nears adult size while muscle, coat, and stamina keep developing.

15 - 24 months

Conditioning phase

Adult movement and coat settle with measured food and regular work.

24+ months

Mature Collie

Adult care centers on coat, eyes, medication records, meals, and lean stamina.

Feeding rules

Feeding Rules Every Collie Owner Should Know

Rule 1

Keep large-breed growth steady

Avoid pushing fast or heavy gains.

Rule 2

Use measured meals

Measured meals help compare appetite, stool, and weight.

Rule 3

Keep meals calm

Avoid hard exercise right around full meals.

Rule 4

Use life-stage food

Puppy, adult, and senior formulas serve different needs.

Rule 5

Hydrate after activity

Water supports exercise, coat, and digestion.

Rule 6

Change diets slowly

Track stool, coat, skin, appetite, and weight during transitions.

Feeding

How Much Should I Feed My Collie?

Collie portions depend on age, sex, coat type, food calories, activity, body condition, digestion, and growth stage.

Lean frame - coat-aware checks - calm meal timing

Puppy meals

Support steady large-breed growth

Feed enough for energy and frame without making the puppy heavy.

Coat rule

Feel the body under the coat

Brush time should include ribs, waist, skin, and stool notes.

Meal timing

Keep food and hard activity separate

Calm meal timing helps a deep-bodied breed stay comfortable.

Daily life

Temperament & daily fit

Collie puppy daily life photo for healthy weight guidance
GentleResponsiveFamily-friendly

Good fit for

Homes that match this breed

  • Families wanting a responsive, gentle dog with daily exercise
  • Owners who can brush rough coats or maintain smooth coats consistently
  • Homes that will discuss eye testing and MDR1 status with their veterinarian

Things to watch

What can change the trend

  • Full rough coat can hide rib and waist changes
  • Medication sensitivity and eye issues need breed-aware veterinary context
  • Large-breed growth should stay steady rather than heavy

Care

Care routine

Feeding

Use measured meals that support lean large-breed growth, with calm timing around exercise.

Exercise

Provide daily walks, herding-style games, training, and play without overloading growing joints.

Grooming

Brush according to coat type and use grooming time to check ribs, skin, feet, and coat mats.

Training

Use gentle, positive, consistent training because Collies are responsive and sensitive.

Warning signs

Warning Signs: Is Your Collie Overweight or Underweight?

Collie coat can hide condition, so use hands-on checks and movement quality.

Signs of extra weight

  • Ribs become hard to feel under coat
  • Waist and tuck soften
  • Movement looks heavier or less graceful
  • Recovery takes longer after normal walks
  • Skin or coat mats increase with lower activity
  • Weight rises after treat or meal changes

Signs of too little weight

  • Ribs, hips, or spine feel sharp
  • Muscle over thighs or shoulders looks flat
  • Energy drops during normal work
  • Coat quality declines with weight loss
  • Appetite changes or stool stays loose
  • Vision or health changes affect activity

Similar breeds

Compare similar guides

Next step

Run the estimate with Collie selected

Use live age and weight inputs, then compare the result with this breed guide and its matching size chart.

Puppy chart by ageBody condition scoreLarge-breed growthBrowse all breeds
Estimate this breedOpen size chart

FAQ

Frequently asked questions

Many males fall around 60-75 lb and many females around 50-65 lb, but frame, sex, coat, and body condition matter.

Many 6-month Collies are around 37-58 lb, depending on sex and frame.

Many reach most height near 12-15 months, then continue building muscle, coat, and condition through about 24 months.

Yes. Brush time should include rib and waist checks because rough coat can hide gradual changes.

Some Collies have medication sensitivity linked to MDR1. Ask your vet about testing and keep the result in your records.

Track ribs, waist, coat, exercise, eyes, vision confidence, medication records, stool, appetite, meals, and recovery.

Call your vet for vision changes, suspected medication reactions, bloat signs, limping, rapid weight change, appetite loss, or persistent digestive issues.

Estimates only. Not veterinary advice.