Australian Shepherd Age Calculator: Dog Years to Human Years

Australian Shepherd age in human years

Dog years	Human years	Life stage
1	15	Adolescent
2	24	Adult
5	36	Adult
7	47	Senior begins
10	60	Senior
13	74	Geriatric

Figures based on The Royal Kennel Club's published medium-breed guidance, as tabulated by Purina UK. For an exact figure, try the Dog Years calculator.

The Australian Shepherd is classified by The Royal Kennel Club as a medium breed, typically weighing 16–32 kg as an adult, with a median life expectancy of around 13.7 years, according to a 2024 analysis of UK veterinary records by Dogs Trust. Despite its name, the breed was developed in the United States, closely associated with Basque shepherds working sheep in California, and the Australian Shepherd is intelligent, energetic, and excels at herding and dog sports alike.

What this means for your Australian Shepherd

The breed carries the MDR1 gene mutation at a relatively high rate, which can cause severe reactions to certain common medications — it's worth asking your vet about testing for this, especially before any new prescription. Hip dysplasia and inherited eye conditions, including progressive retinal atrophy, are also seen in the breed.

Like other high-drive herding breeds, Australian Shepherds need ongoing mental stimulation as they age to avoid boredom or anxiety — gentle enrichment alongside physical exercise helps support healthy cognitive ageing.

When is an Australian Shepherd considered a senior?

Under The Royal Kennel Club's size-adjusted guidance, medium breeds like the Australian Shepherd are generally considered senior from around 7 dog years old.

Related reading: Is the ×7 Rule Real? · Dog Life Stages Explained · Signs Your Dog Is Entering Its Senior Years

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