Australian Cattle Dog Weight Chart by Age

Medium breed

Australian Cattle Dog puppies grow toward an adult weight of 35.0–50.0 lb (15.9–22.7 kg) under the American Kennel Club standard, which gives one range for both sexes; the chart below gives the healthy range at each month.

Quick answers

  • Adults weigh 35.0–50.0 lb (15.9–22.7 kg); the AKC standard does not separate the sexes for this breed.
  • At 6 months a male is usually 26.6–38.0 lb and a female 25.9–37.0 lb — about 76% of adult weight.
  • At 12 months an Australian Cattle Dog is around 92% of its final weight.
  • Fully grown at roughly 15 months.

Australian Cattle Dog weight chart by age

Middle of the healthy range for an Australian Cattle Dog, by age and sex. A quarter of healthy puppies sit above these figures and a quarter below.
AgeMaleFemale% of adult
2 months9.6–13.7 lb4.4–6.2 kg10.0–14.2 lb4.5–6.5 kg27%
3 months14.9–21.2 lb6.8–9.6 kg15.2–21.7 lb6.9–9.9 kg42%
4 months19.6–28.0 lb8.9–12.7 kg19.8–28.2 lb9.0–12.8 kg56%
5 months23.7–33.8 lb10.8–15.4 kg23.4–33.4 lb10.6–15.2 kg68%
6 months26.6–38.0 lb12.1–17.2 kg25.9–37.0 lb11.8–16.8 kg76%
8 months30.3–43.2 lb13.7–19.6 kg29.7–42.5 lb13.5–19.3 kg86%
10 months32.3–46.1 lb14.6–20.9 kg31.5–45.1 lb14.3–20.4 kg92%
12 months32.3–46.2 lb14.7–21.0 kg31.9–45.6 lb14.5–20.7 kg92%
18 months34.5–49.3 lb15.6–22.3 kg34.0–48.6 lb15.4–22.0 kg98%
24 months35.0–50.0 lb15.9–22.7 kg35.0–50.0 lb15.9–22.7 kg100%

Weigh on the same scale at the same time of day where you can. The trend across several weighings tells you far more than any single row.

Reading the range

The American Kennel Club gives one weight range for the breed, 35 to 50 lb, and does not separate males and females, so the two columns above are identical.

The standard separates the sexes by height instead, by about an inch. Males usually finish toward the top of the range and females toward the bottom, but both columns cover the whole of it.

How a medium breed grows

Australian Cattle Dogs reach roughly 27% of adult weight at 2 months, about 56% at 4 months, and around 92% at 12 months.

The last stretch is slow: from 12 months to full size takes about as long again as the first year’s final quarter. An Australian Cattle Dog that looks lanky at 10 months is usually on schedule rather than behind.

Where to go next

Other medium breeds

Frequently asked questions

What is the average weight of an Australian Cattle Dog?

An adult Australian Cattle Dog weighs 35.0–50.0 lb (15.9–22.7 kg), according to the American Kennel Club breed standard, which gives one range for both sexes.

How much should a 3 month old Australian Cattle Dog weigh?

A male is typically 14.9–21.2 lb (6.8–9.6 kg) and a female 15.2–21.7 lb (6.9–9.9 kg) — around 42% of adult weight.

How much should a 4 month old Australian Cattle Dog weigh?

Roughly 19.6–28.0 lb for a male and 19.8–28.2 lb for a female, about 56% of the way to adult weight.

How much does a 6 month old Australian Cattle Dog weigh?

A male is usually 26.6–38.0 lb (12.1–17.2 kg) and a female 25.9–37.0 lb (11.8–16.8 kg).

How much does a 12 month old Australian Cattle Dog weigh?

32.3–46.2 lb for males and 31.9–45.6 lb for females — about 92% of final weight, with the rest filling in over the following months.

How big will my Australian Cattle Dog get?

At 56% of adult weight by 4 months, a rough shortcut is to double a four-month weight. The calculator on the home page does this properly, using the growth curve for this size class and returning a range rather than one number.

When is an Australian Cattle Dog fully grown?

Height is usually settled first; weight keeps filling in until around 15 months. The last 8% of adult weight takes roughly as long as the jump from 3 to 4 months.

Do male and female Australian Cattle Dogs weigh different amounts?

The AKC gives one range for both sexes, 35 to 50 lb, so the chart columns are the same. The standard sets males about an inch taller than females, 18 to 20 inches against 17 to 19, so males usually finish a little heavier. Expect a female to sit lower on the chart than a male of the same age, and do not read that as underweight.

What size class is an Australian Cattle Dog?

A medium breed, defined by adult weight. That classification determines the growth curve used here: veterinary research shows dogs of similar adult size grow at similar rates regardless of breed.

Is my Australian Cattle Dog puppy underweight if it is below the chart?

Not necessarily. The table shows the middle of the healthy range, so plenty of healthy puppies sit below it. A puppy that is consistently below and not gaining, or that has dropped from a higher line to a lower one, is worth a vet visit. A single reading below the range is not.

How can I tell if my Australian Cattle Dog is a healthy weight?

Body condition tells you more than the scale. You should be able to feel the ribs under a thin layer of fat without pressing, see a waist from above, and see the belly tuck up from the side. A dog can sit inside the weight range and still carry too much fat.

Why do Australian Cattle Dog growth charts disagree with each other?

Most published charts come from one breeder’s litters or from unsourced rules of thumb, and many do not say whether the figures are for males, females or both. The ranges here come from centile curves fitted to millions of veterinary bodyweight records, scaled to the AKC adult range, and split by sex.

Does neutering change how much an Australian Cattle Dog weighs?

The research behind these curves found neutering shifted growth trajectory only slightly, by less than the variation between individual dogs, so separate curves were not needed. Neutering is associated with a higher chance of becoming overweight in adulthood, which is a body condition question rather than a growth chart one.

How much does an Australian Cattle Dog weigh in kg?

An adult Australian Cattle Dog weighs 15.9–22.7 kg for both sexes under the American Kennel Club standard. On the median growth curve a male is 6.8–9.6 kg at 3 months, 12.1–17.2 kg at 6 months and 14.7–21.0 kg at 12 months; a female 6.9–9.9 kg, 11.8–16.8 kg and 14.5–20.7 kg. Every row of the chart above gives kilograms under the pounds.

How much does a female Australian Cattle Dog weigh?

The American Kennel Club standard gives one range for both sexes, 35.0–50.0 lb (15.9–22.7 kg); it does not publish a separate female figure. On the female growth curve a female Australian Cattle Dog is about 19.8–28.2 lb at 4 months, 25.9–37.0 lb at 6 months and 31.9–45.6 lb at 12 months, reaching adult weight at around 15 months. The Female column of the chart above gives every month.

How much does a male Australian Cattle Dog weigh?

The American Kennel Club standard gives one range for both sexes, 35.0–50.0 lb (15.9–22.7 kg); it does not publish a separate male figure. On the male growth curve a male Australian Cattle Dog is about 19.6–28.0 lb at 4 months, 26.6–38.0 lb at 6 months and 32.3–46.2 lb at 12 months, reaching adult weight at around 15 months. The Male column of the chart above gives every month.

Where these numbers come from

Adult weights are the breed standard figures published by the American Kennel Club. The month-by-month ranges are estimates rather than measurements of this breed: they come from growth centile curves built from around 15 million bodyweight records collected at US primary-care veterinary hospitals, published open-access by Salt and colleagues, and scaled to the adult range above.

That research found dogs of similar adult size grow at similar rates regardless of breed, which is what makes the scaling valid. The records were collected between 1994 and 2013 and describe dogs attending veterinary clinics rather than an idealised population.

The derived table, the filtering steps and the known gaps are all published, so the arithmetic here can be checked rather than taken on trust.

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