Australian Shepherd
12–15
lifespan (years)
16–29
weight (kg)
medium
size class
How old is your Australian Shepherd?
Enter an age — the calculator is tuned to this breed's size class.
BASED ON AKC BREED DATA
About the Australian Shepherd
The Australian Shepherd is a brilliant, high-drive herding dog — devoted, energetic, and always ready to work. Aussies are reasonably long-lived for their size and stay active for years.
Caring for a Australian Shepherd
Exercise and work. An Aussie needs a job. Without intense daily exercise and mental challenge it becomes anxious and destructive.
Mental stimulation. One of the smartest breeds — training, agility, and puzzles are not optional.
Senior years. Aussies often stay active late. Around age 9 to 10, scale activity to keep an aging Aussie comfortable.
Australian Shepherd questions
How long do Australian Shepherds live?
Australian Shepherds typically live 12 to 15 years.
When is an Aussie a senior?
An Australian Shepherd is generally considered senior around age 9 to 10.
Do Australian Shepherds age slowly?
Aussies age at a moderate, medium-breed pace and tend to stay energetic well into later life.
Lifespan data: American Kennel Club breed profile — akc.org/dog-breeds/australian-shepherd
Guides about aging in Australian Shepherds
- How long do Australian Shepherds live? Australian Shepherds typically live 12 to 15 years. Cancer and the MDR1 gene mutation are the two health factors most likely to cut that short.
- The multiply-by-seven myth, explained One dog year does not equal seven human years. Here is where the myth came from and what is actually true.
- Dog life stages explained Puppy, adolescent, adult, senior. The four life stages of a dog and what each one needs.
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