Australian Cattle Dog Age Calculator: Dog Years to Human Years

Australian Cattle Dog 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 Cattle Dog is classified by The Royal Kennel Club as a medium breed, typically weighing 15–22 kg as an adult, with a median life expectancy of around 14.0 years, according to a 2024 analysis of UK veterinary records by Dogs Trust — one of the longer average lifespans of any medium breed. Developed in 19th-century Australia by crossing working Collies with Dingoes to herd cattle over vast distances in harsh conditions, the Australian Cattle Dog is highly intelligent, energetic, and fiercely loyal, but needs a job to stay content.

What this means for your Australian Cattle Dog

Progressive retinal atrophy and inherited deafness are both seen in the breed, so regular eye and hearing checks are worthwhile, particularly as your dog ages. Hip dysplasia is also reported, so watch for stiffness after rest or reluctance to jump.

Australian Cattle Dogs are prone to boredom-related behaviour issues if under-exercised, and this doesn't necessarily ease with age — keeping up appropriate mental and physical stimulation, adjusted for your dog's changing fitness, matters throughout its life.

When is an Australian Cattle Dog considered a senior?

Under The Royal Kennel Club's size-adjusted guidance, medium breeds like the Australian Cattle Dog 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

Compare: vs Border Collie · vs Australian Shepherd · vs German Shepherd Dog