Use this Australian Stumpy Tail Cattle Dog puppy weight calculator to predict how big your puppy will get. Australian Stumpy Tail Cattle Dogs are a herding breed that typically reach full size by around 12-18 months.
Enter your puppy's current weight and age to predict their adult size
Estimates based on breed growth curves. Individual dogs vary with genetics and nutrition — check with your vet for a personalized read.
A practical pick for medium-sized breeds.
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| Age | Weight |
|---|---|
| Birth | 1 to 2 lbs |
| 2 Months | 5 to 9 lbs |
| 3 Months | 8 to 14 lbs |
| 4 Months | 11 to 18 lbs |
| 5 Months | 14 to 23 lbs |
| 6 Months | 18 to 27 lbs |
| 7 Months | 21 to 31 lbs |
| 9 Months | 24 to 36 lbs |
| 10 Months | 27 to 41 lbs |
| 1 Year | 30 to 44 lbs |
| 1.5 Years | 32 to 45 lbs |
| 2 Years | 32 to 45 lbs |
Estimated from typical medium-breed growth curves and the Australian Stumpy Tail Cattle Dog's adult weight range. Individual puppies vary — use the calculator above for a prediction based on your puppy's actual current weight.
New breed data, growth tips, and puppy-parenting insights, plus our free printable puppy growth tracker.
Prone to hip and elbow dysplasia, several inherited eye conditions (progressive retinal atrophy, Collie eye anomaly, cataracts), and deafness — standard herding-breed screening applies.
A quality diet matched to this breed's genuinely high working-dog energy level.
The short coat needs minimal brushing beyond shedding season.
Needs a real job or serious daily exercise and mental stimulation — independent-minded and can be a challenge on basic obedience despite genuine intelligence, so early, consistent training matters.
Not simply an Australian Cattle Dog with a docked tail — the Stumpy is a genuinely distinct breed with a naturally short or absent tail, sharing common Halls Heeler ancestry with the ACD but bred along a separate line since before 1900. The breed nearly went extinct by the 1960s before a dedicated Australian redevelopment program rebuilt it; it joined the AKC's Foundation Stock Service in 2018.
Loyal "Velcro dogs" with chart-topping smarts and stamina, Stumpies need a genuine job (official or otherwise) and tend to be reserved with strangers until they warm up.
