Home / Questions / Smooth Collie
A Smooth Collie typically lives 12 to 14 years, and where a Smooth Collie lands inside that range owes as much to daily care as to genes. Read the range as a budget of years: how a Smooth Collie spends them depends on care in ways this page sets out.
A range is not a countdown: it describes thousands of Smooth Collies, and an individual dog's care moves it within, and occasionally past, the figures. Screening is the third lever: the breed's known conditions, caught at their scheduled checks, change from crises into management.
Size context from the growth table: 4 months at about 14 to 21 lb, 9 months at about 34 to 51 lb, 24 months at about 50 to 75 lb mark the Smooth Collie's first year, against an adult standard of 50 to 75 lb. The Herding group is where the record files the Smooth Collie; its home ground is Scotland.
Planning backwards helps: a dog expected to live 12 to 14 years will spend real time as a senior, and that phase is easiest prepared early.
The record in one place: 22 to 26 inches at the shoulder, 50 to 75 lb, a lifespan of 12 to 14 years and 60 to 120 minutes of daily exercise. Most questions about this breed become easier once those four numbers are in view.
Puppies need socialisation, coat care habituation, gradual exercise building and training foundations laid early, including the rules about herding the household. Adults enjoy a long, vigorous prime: twelve to fourteen years. Senior status arrives around ten: twice yearly checks with hip and eye awareness, joint friendly exercise and continued light duties. Owners notice stages in behaviour before birthdays: the wild young Smooth Collie settles, the settled dog greys, the grey dog slows.
A simple weight log, kept twice a year across a Smooth Collie's life, catches the slow gains and losses that daily life hides.
Ask any Smooth Collie breeder about screening and the list starts with Hip dysplasia, Eye conditions (including collie eye anomaly) and MDR1 drug sensitivity (DNA test). Hip screening is core to responsible breeding in herding breeds, per the record. Eye checks complete the core panel, and several herding lines also DNA test for hereditary eye conditions, per the record: in Collies that means collie eye anomaly testing is a standard question. None of this is cause for anxiety in a Smooth Collie owner: it is a checklist, and checklists are how long lives are actually built.
Longevity runs in families: ask a Smooth Collie breeder what their oldest dogs reached and listen for records, not adjectives.
Greying around the muzzle, slower starts after rest, longer naps and a little stiffness on stairs are the usual first notices in a Smooth Collie past about 7 years. None is an emergency; together they are the signal to switch the routine to its senior version.
Keep the dog lean enough to feel ribs under a thin fat cover, protect the teeth, screen for the conditions listed for the Smooth Collie at the ages your vet advises, and hold daily exercise near the 60 to 120 minute mark for as much of life as the dog can manage.
The range 12 to 14 years is a planning average across thousands of dogs, not a prediction for yours. A Smooth Collie from health tested parents, kept lean, has a genuine claim on the top of it.
Two breeds, one decision: the honest differences that matter day to day.
How much exercise a Smooth Collie needs, what fills the minutes best and how training doubles as exercise.
A Cockapoo in good hands should see 14 to 18 years, and the difference between the two numbers is mostly management.
This page is general information drawn from the published guidance of the organisations listed under Sources below. It is not veterinary advice and does not replace your own veterinarian, who knows your dog. If your dog is unwell, in pain or has collapsed, contact your veterinarian straight away.
Last updated: November 4, 2026