Shetland Sheepdog
The Shetland Sheepdog is a small, agile herding breed from Scotland's Shetland Islands, where harsh conditions produced a hardy, intelligent working dog. Often mistaken for a miniature Collie, Shelties are a distinct breed with extraordinary trainability and sensitivity to their owner's emotions. They excel in obedience and agility competition.
12–14
years lifespan
20–30
lbs (male)
13–16
inches tall (male)
high
energy level
Temperament
How Old Is Your Shetland Sheepdog in Human Years?
Use our breed-specific calculator to find out, plus get personalised health and care guidance for your dog’s exact age.
Open Shetland Sheepdog Age CalculatorCommon Health Conditions
Collie Eye Anomaly (CEA)
Inherited eye defect.
Typical onset: 0–0.5 years
MDR1 Gene Mutation
Drug sensitivity mutation in ~15% of breed.
Typical onset: 0–1 years
Dermatomyositis
Autoimmune skin/muscle disease in Shelties/Collies.
Typical onset: 0.25–1 years
Hypothyroidism
Underactive thyroid.
Typical onset: 4–8 years
Hip Dysplasia
~8% affected per OFA.
Typical onset: 1–4 years
Lifespan Factors
The median lifespan for a Shetland Sheepdog is 13 years. Key factors that influence longevity:
- CEA
- MDR1 gene
- dermatomyositis
- thyroid disease
- hip dysplasia
When Is a Shetland Sheepdog Considered Senior?
Shetland Sheepdogs are generally considered senior at around 8 years of age. At this point, you should increase vet visits to twice yearly and watch for age-related health changes.
Check your Shetland Sheepdog’s age in human years →